Kool-Aid Lab

Kool-Aid Questions
Molarity calculations:
A. Add up the total grams of sugar and kool-aid mix you used and record in your data table. Convert grams of Kool-Aid/Sugar Mix to moles (the gram formula mass for the Kool-Aid/Sugar mix is 342 grams/mol)
B. Convert your volume of solution (145 mL) to liters:
C. Molarity= ____mols solute/ _____L of solution

1. What flavor of Kool-Aid did you use?
2. Describe the taste of your Kool-Aid:
3. What is the Molarity of the Kool-Aid in your cup?
4. What would the Molarity of 2 quarts of Kool-Aid be if you followed the directions on the package?
5. Explain how the recipe for Kool-Aid is like a balanced chemical equation.

Exploding Pumpkin (Thanks Mason Schreck)

11-9-11

Today in class our taecher, Mrs. Sorensen, came to each pod of desks and had a conversation about the silent labs and how they expressed each of the three preasure volume and temp. laws. our pod had to explain how the toy story balloon showed the Charale's law. It showed this law becuase there was a change in temp. due to heater, and a change in volume becuase the particals in the ballon started bouncing off eachother creating a bigger volume. but the preasure never changed. We also had to explain why the water bottle cannon showed the Boyle's law. this law was explained becuase when we crenckled up the bottle we decreased the volume. when we decreased the volume the particals had less room to move around. this caused the particals to bump into eachother and cuase a greater preasure. but the temp. never changed. along with talking about these labs ans laws we also were asighned preasure problems. they can be found on the teachers website.

November 9, 201.

Pressure Unit Conversions Assessment

Pressure Unit Conversions Assessment
1 atm=760 mmHg = 101,325 Pa= 14.7 psi =1.013 bar

Squares:
1. The air pressure for a certain tire is 109 kPa. what is this pressure in atmospheres?
3. The weather news gives the atmospheric pressure as 1.07 atm. What is this atmosphereic pressure in mm Hg?
4. An experiment at Sandia National Labs in New Mexico is performed at 758.7 mm Hg. What is this pressure in atm?
9a. 2 atm= ______________bar
9d. 4.9 bar =_________________psi

Triangles:
5. A bag of potato chips is sealed in a factory near sea level. the atmospheric pressure at the factory is 761.3 mm Hg. The pressure inside the bag is the same. What is the pressure inside the bag of potato chips in Pa?
6. The same bag of potato chips from problem 5 is shipped to Denver, Colorado, where the atmospheric pressure is 99.82 kPa. What is the difference (in Pa) between the pressure in the bag and the atmospheric pressure?
7. The pressure gauge on a compressed air tank reads 43. 2 psi. What is the pressure in atm?
9b. 2 bar=____________atm
9e. 113 kPa = __________bar

Stars:
2. The air pressure inside a submarine is 0.62 atm. What would be the height of a column of mercury balanced by this pressure?
8. The pressure in the tire of an automobile is 34.8 psi. What is the pressure in kPa?
9c. 669 mmHg = __________bar
9f. 35 bar =____________Pa
10. On a warm, sunny day, a student uses a tire pressure gauge to test the air pressure of her tires. While listening to the weather report on the way to the garage, she finds the barometric pressure is 780 mmHg. If the gauge reads a pressure of 35 psi, what is the actual pressure inside the tires? Please give your answer in psi, mm Hg, atmospheres and Pascals.

Egg in a bottle -

• No volume changing.

• constant volume

• temp - average kinetic energy of the particles.

• pressure is less than the pressure inside the flask.

• the egg was PUSHED/FORCED into the flask.

explanation: The egg in the bottle is am example of Gay - Lusaacs law. The bottle had hot water, which had fast moving molecules that were spread apart. Once the water is dumped and the egg is placed in the mouth of the flask. This makes the volume remain constant. As the temp decreases in the bottle, the molecules move slower and closer together causing less pressure. There is less pressure inside the flask compared to outside, so the egg is pushed/forced into the bottle.

Station One:

I think this station would be Boyles Law because the only thing constant was the temperature because it didnt change when the syringe was being pulled out & pushed in. The volume of air/gases in the syringe changed everything it was released & pushed in. The pressure changed because when you push the syringe in, the pressure decreased & pushed down on the marshmallow to make the air pressure press against it so it shrunk. When the pressure of the air was increased because of the syringe being pulled back out, the marshmallow expanded because it didnt have the pressure on it.

Balloon Station:

I think this station would be Gay-Lusacas Law because the temperature clearly was hot & that effected the pressure of the balloon forming to the flask. because the heat made it vacuum into the flask as far as it would go & the pressure pushing the ballooon into the flask was caused by the heat. So the temperature & pressure are directly related.

Station Three:

I think this station would be Charles Law because the temperature is changing becuase the heat from the heater is effecting the balloon because the heat is going into the ballooon & changing the volume of it & making it rise because heat rises. It is a direct relationship because the temperature effects the volume because the heat fills up inside the balloon.

Station Four:

I think this station would Gay-Lusacas Law because the temperature of the boiling water was directly related to the pressure put on the can when it was placed in the water.

Station Six:

I think iit would be Gay Lusacas Law because the temperature was changing when the flask was filled with hot water & then placed in cold water. And because the pressure changed when the egg was vacuumed into the flask.

Pipette Station:

I think this station would be Boyle's Law because the pressure was all of the books on top of the pitppett to show how far it would push the liquid through the tube. The volume is how much liquid was being moved by the pressure of the # of books so the pressure & volume are inversely related.

Station Seven:

I think this station would be Boyle's Law because the pressure changed when we blew into the flask & the egg slipped out & because the volume of the egg decreased to fit through the opening of the flask.

Gas Laws

There were three gas laws observed in the stations that we did

• Boyle's Law => Constant temperature - pressure and volume are inversely related (do opposites)
•  Charle's Law => Constant pressure - if temperature goes up then volume does the same (directly related)
• Guy- Lusaac's Law => Constant volume - temperature and pressure are directly related

We were observing each of these different laws in these stations (obviously different laws for each station).

      As I observed Station 4 (Pop-can Lab) I believed it was Charle's Law.

Reasons are as stated:

• We heated the can with some water in it which  increased vibration and movement of the molecules in the water. And when we quickly changed the temperature, the energy that was moving the molecules around faster and faster, was suddenly decreased and almost deceased, therein bringing the molecules quickly together which decreased the volume just as the temperature was. This shows just like in it's definition Charle's Gas Law says temperature and volume are directly related.
• Also as stated in it's definition the pressure remained constant, all that changed was the temperature and the volume.

                                                      ==> Courtesy of chemteacher.chemeddl.org

     As I observed Station 1 & 2 (the marshmallow in the syringe) I believed it was Boyle's Law

Reasons are as stated:

• When you pulled back on the syringe, that decreased pressure and the marshmallow expanded. This occurred because when you reduce the force that was making the molecules of the marshmallow exist in closer quarters, then when you pull back on the syringe your are reducing that force. Which in turn is letting the molecules of the marshmallow to spread apart and have more room to move around. The less pressure you have the greater the volume of the marshmallow.
• Also the definition of Boyle's states that volume and pressure are inversely related, which as how I just described the lab, when you reduce the pressure on the marshmallow the volume of the marshmallow increases, confirming this lab as Boyle's Law
• Also as stated in it's definition it says that temperature must stay constant, which throughout this whole station the temperature was constant.

                                         ==> Courtesy of kingsford.org

       As I observed the Pressure & Temperature Lab shows Gay-Lussac's Law

Reasons are as stated:

• Throughout this lab I observed that the volume of the bottle and the syringe inside never changed, which Gay-Lusaac's Law states that volume must remain the same.
• In this lab it obviously shows how temperature and pressure are directly related, because as Gay Lusaac's Law states, volume must remain the same but temp. and pressure are directly related. During this lab, as pressure increased the molecules inside of the bottle became more and more compressed, which allowed for less movement, which in return lowered the temperature of the interior. Greater pressure equals colder temperatures because at higher pressure the molecular friction reduces, which doesn't generate any energy (heat).

Shhilent Lab

Station 4-

This station was called crush the can. The materials you need are is a can that is not crushed but already drank. Ice cold water and boiling hot water. Pour water into can and put that on a hot plate. When steam comes use tongs to grab the can turn it upside down while moving it into the ice water. This will make it get crushed. This is charles law.

Station 6-

This station was called the egg in the bottle lab. The materials you need for this lab were a hard boiled egg hot water flask and a pair of hands. What you wanna do first is pour the hot water into the flask. After that is done put the egg on the top of the flask so it gets pushed into the flask. This is called Gay-Lusaccs Law.

Station 1/2-

The marshmellow lab is a great example for Boyles law. Essentially what happens is you put a marsh mellow in a syringe squeeze the syringe down but not all the way leave a good amount of space when you pull the syringe out or try the marsh mellow expands, same thing goes for when you push. When you push the syringe the molecules get compacted and get smaller same thing goes for when you pull they get bigger.





By Dan maz

Volume, Pressure, Temp Laws

The egg in a bottle
The egg in a bottle is an example of Gay-Lusaac's law stating; Volume is constant and temperature and pressure are directly related. This is because the volume of gas inside the flask did not change.The change of the temperature caused the change in the pressure inside the flask. when the particles inside the flask slow the pressure drops to below the amount of pressure outside the flask forcing the egg inside the flask.

Balloon in the flask
The balloon in the flask is an example of Gay-Lucsaac's law as previously stated. The flask was headed and once it has been taken off of the hot plate the water is dumped out and the balloon is placed over the mouth of the flask. The pressure inside the flask forces the balloon inside the flask when the balloon is inside the flask the balloon expands inside of the flask. The balloon expands inside the flask because the pressure on the "inside" of the balloon is greater then that inside the flask or the outside of the balloon causing the balloon to expand.

Pop Can
The pop can is an example of Gay-Lucsaac's law as previously stated. The can is on a hot plate and is heated until the water inside the can is boiling. Once the can is hot you use tongs and flip the can into the ice water. when the can is flipped into the water that traps the fast moving particles inside the can and the ice water causes the particles to stop moving immediately. This in turn causes the can to condense and crunch.

Daily Blog

Today we commented on each others blogs. Everyone made a blog for a gas law. There is 3 gas laws. The first one is called Charles the second one is called Boyles and the last one is called Gay Lusaccs. We did silent labs and had to blog about all the laws atleast 1 time each. Also if someone didnt finish their blog they got to finish it up quickly. In addition to just blogging we are doing 2 more labs a shrink lab and also if we are lucky a fog machine. The fog machine needs juice so if it works then we will be able to use it.

Mrs. Sorensen made a great explanation for the Egg incules the bottle lab.
"The egg in the bottle is an example of gay lucass law the bottle had hot water which had fast moving molecules that use speed apart once the water is dumbped and the egg is placed in the mouth of the flask this makes the volume remain constant as the temp decreases in the bottle thermole move slower and closer together causing less pressure there is less pressure inside the flask compared to outside so hte egg is pushed into the bottle."

Revised Laws

Station One:
I think that this station would be Boyles Law because the only thing constant was the temperature because it didnt change when the syringe was being pulled out & pushed in. When the syringe was being pulled out the molecules had more room which caused less collision. which caused less pressure. The volume in the syringe changed everything it was released & pushed in. When the pressure of the air was increased because of the syringe being pulled back out, the marshmallow expanded because the molecules had more room to move instead of collliding. So thats why the marshmallow shrunk when the syringe was being pushed in.

Balloon Station:
I think this station would be Gay-Lusacas Law because the temperature clearly was hot which formed fast moving hot molecules & that effected the pressure of the balloon forming to the flask. because the heat made it vacuum into the flask as far as it would go & the pressure pushing the ballooon into the flask was caused by the heat. So the temperature & pressure are directly related. The volume was constant because when the balloon was formed over the top of the flask the molecules were causing collisions.

Pippett Station:
I think this station is Boyle's Law because the pressure was all of the books on top of the pitppett to show how far it would push the liquid through the tube. The volume is how much liquid was being moved by the pressure of the # of books. so the pressure & volume are inversely related. The pressure was the books on top of the pipette. The liquid inside was tightly compressed and couldnt move when the pressure was on top of it.

Kaitlyn Stolte

Boyles- Station 6 and can station: because as temp of water decreased the pressure increased so it pushed egg, as temp decreased pressure increased.
(Constant temp pressure and volume are inversely related)

Charles- Station 1 and Station 2: because constant temp and volume are directly related, as you apply pressure increases temp and volume expands.
(Constant pressure temp and volume are directly related)

Gay-Lusaac's- Straw station and Station 3: because as temp increases so did pressure, as temp increased it increased pressure and volume.
(Constant volume temp and pressure are directly related)

The Laws of Temp. Volume and Presure

Real life example: when you put a marshmellow in the microwave. when you turn the mirowave on the temp. increases. when the temp. increases the volume increases also. but the preasure dose not change. this example shows the Charel's Law



Boyle's Law- constant tempurare and preasure and volume are inversley related( when one goes up the other goes down.)
This law is shown in the marshmellow station. When you push the suryeng you are increasing the preasure. This shrinks the volume of the marshmellow, and is why the marshmellow shrivels up. When you pull on the suryeng the marshmellow grows. This is due to the decrease in preasure and an increase in volume.

Charel's Law-Tempurature and volume are directly related. Preasure stays consistant.
One of the labs that exemplified this law was the heating of the balloon. As heated the balloon with a heater, we changed the tempuratureinside of it. as the air inside the balloon heated the particals became farther apart. this made the volume become larger. but the presurewas not changed.
Gay-Lusaac's Law- Tempurature and preasure are directly related. Volume is consistant.
We did a lab that was an example of the Gay-Iusaac's law. In the lab we had an air compresser and a syrenge with a thermometer in it. As we pumped air into the bottle, the pressure was increased which caused the temperature to increase as well. The temperature increased because the more pressure you apply to an object the hotter it gets. the gas in the bottle get hotter due to the molicules that are bouncing off of eachother. This shows the gay-iusaac's law by having the volume remain consistent, and increasing the pressure making the temperature increase. Here is the data we collected. (In the lab we applied the pressure by useing an air pump. Then we recordedthe preasure and the temperature and then gradually let the pressure out and repeated the proceedure.)
Pressure vs. temp(degrees F)
60psi-81
43psi-79
30psi-75
21psi-73
48psi-79
42psi-75
24psi-75
20psi-21
9psi-71

The 3 Gas Laws

Charles Law- pressure remains constant. Temp and Volume are directly related.
In class we did a balloon lab to show Charles law. We had a ballon and a heater. As we heated the balloon up the balloon got bigger because the particles had more energy and moved around faster. So the volume increased and the ballon rose. This shows Charles law because there was no change in pressure and we increased the temperature causing the volume to increase.

Gay- lusaac's law- Volume remains constant. Temp and Pressure are directly related.
In class we did a lab to prove the Gay-Iusaac's law. In the lab we had air compresser and a bottle with a thermometer in it. As we pumped air into the bottle the pressure increased causing the temperature to also increase because there was more kinetic energy. The temperature increased because the more pressure you apply to an object the hotter it gets. This shows the gay-iusaac's law by having the volume remain consistent, and increasing the pressure making the temperature increase. Here is the data we collected. (In the lab we applied the pressure and recorded it and the temperature and then gradually let the pressure out and recorded the same every now and then.)
Station 9-
Pressure- temp
50-24
40-23
26-22
20-21
Trial 2
50-24
40-23
24-22
20-21

Boyle's Law- temperature remains constant. Pressure and Volume are inverse related.
A Lab we did to show this was the Bicycle station. In the bicycle station we had a bicycle pump, a bottle and a sealed off surenge. The volume measurer was put in the bottle with it set at a certain volume. As we pumped air into the bottle the pressure (psi) increased because we were forcing more air into a inclosed area. This caused the volume in the surenge to decrease because the outside pressure of the surenge was higher then the pressure on the inside of it. This shows that the lab used Boyle's law by the temperature not be a factor and the pressure increasing an the volume decreasing. (We recorded the data by having the pressure high then releasing some of the pressure and recording the volume.)
Pressure (psi)- volume in surenge (mL)
50-1.8
34-2.2
32-2.6
28-2.9
22-3.2
Test 2
50-1.5
40-2.2
36-2.4
24-3.2
21-3.4

A real life example of Gay-lusaacs law is a car tire popping during the summer because heat is aplied which causes the pressure to increase inside of the tire.


chocolena.wordpress.com

A real life example of Charles is a hot air balloon. Heat is being added to the balloon heating up the particals already inside of it and increasing the volume.

nairaland.com

matt mitchell- silent lab

boyles law is shown when there is a constent temperature, and preasure and volume are inversly related- one goes up the other goes down.

this law is shown in the marshmellow stations. when you push the suring you are increasing the preasure, you increase the preasure by forcing the same amount of volume into a smaller space, which squeezes the marshmellow without the suring phisicaly touching the marshmellow, this is why the marshmellow shrivels up.



Charles law states that under consistant preasure, temperature and volume are directly related- one goes up the other goes up too.

this law is shown in the can crushing staiton. we heated up the can on a hot plate which made the temperature rise and the volume of the water inside the can to expand. then by putting the heated can into water the temperature quickly decreased as did the the cans volume when it crushed.




Gay-Lasacs law states the when under constent volume, temperature and preasure are directly related

this law is shown in the bike pump lab. when you put more preasure in the bottle, by forcing more air into a smaller volume, the temperature goes up because there is more colisions which equals more colisions, and when you lessen the preasure, by releasing air, the temperature goes down, because there are less colisions which equals less friction.

Different small labs

The 1st lab I did was the boiled egg. What I did was heat up water and then pouring it into a bottle and moving the water around so that it made the bottle hot. Then I dumped the water out and put the hard boiled egg on the top ( it was to big) and the pressure inside the bottle ( the hot air) sucked the egg down so that why it could be released. When the egg what down at the bottom I had to tip it over and blow into the bottle and the pressure that I caused made the egg come out. This is because the air wanted to fill up the whole bottle and pushed the egg out. T
The next lab I did was where I had to put water in a can and let that boil and when I boiled I had to Flip it over in to could water. The can crushed due to the temp change. This is because the particulars in the can were moving so fast that when they went in to cold water they stopped causing the can to crush.
The next one was I had to hold a balloon to a heater for one minute. When I let go the balloon rose to the top of the class. This happened be cause I heated to particles in the balloon and heat rises. But as it rose the energy it took to heat it when away and the balloon went cold and came down.
The next one was placing a marshmallow into a syringe. When I pulled back the marshmallow got so big. That's cause the pressure bulled on the marshmallow causing it to get super big.
The next one I did was I heated a bottle and then I quickly placed a balloon over the top. The balloon was suck in then i placed it in ice water and it expanded ( the heat pulled it in cause it wanted to get out and it expanded cause of the rubber.)

Examples of different laws

Boyle's Law:
We had a flask and put hot water in it and swirled it around and then dumped it out, we than put a hard boiled egg on top and than set it in cold water and it sucked it in. Once the egg was in there we had to put the egg at the opening of the flask and blow really hard and the egg would slid out. This is boyles law just because it says that pressure and volume are opposite and thats excactly what it is showing here.

Charles' Law:
We used this blue liqued and filled a pipet with it, we layed it down and measured it. We than placed a text book on it and measured it. We than placed another book and it and measured it again. We did this untill we got to 4 books. I think this is an example of charles law because its under pressure the entire time.

Gay-Lusacs:
Before we did anything with the marshmallow's we pulled out the syringe and placed the marshmallow at the bottom comfortable with out squishing it, then we proceeded to put the other half of the syringe back in and place it on top of the marshmallow. We then pulled back the syringe and the marshmallow expanded as we kept pulling back. I believe this is a great example of Boyle's law just because in Boyle's law it states that the temp stays constant, and the pressure and volume are inversely related.

Labs and Laws By Bill

The first lab Im gonna talk about is where we put a marshmallow into a syringe. I then compressed and pulled out the plunger with the marshmallow in the syringe. By compressing the syringe the molecules of the marshmallow had a smaller area to move around in which caused the decrease in volume. When the pressure was released the marshmallow returned to its original size. When I pulled out on the syringe plunger the opposite happened, the marshmallow grew in volume filling up more of the syringe. Then when the plunger was released the marshmallow returned to its original size. This lab relates to Boyles Law, which states that when the temperature stays constant the pressure and volume are inversely related to one another. This means when pressure is increased volume decreases and when pressure is decreased the volume increases. This relates due to the fact that when pressure was put on the marshmallow, the marshmallow decreased in volume. When the pressure decreased the marshmallow increased in volume. With more or less pressure being exerted determines how much force is put on the marshmallow.

The second lab Im gonna talk about is where I put water into a pop can and placed the can onto a hot plate. When the water inside the can began to steam I quickly flipped the can upside down into cold water. Immediately the can caved in on itself. This lab relates to Gay-Lusaac's law, which states that if there is constant volume then the temperature and pressure are directly related. This means that as the temperature increases the pressure increases and when the temperature decreases the presure decreases. In the lab, the water in the can was the increase in temperature creating greater pressure. When the can was flipped into the ice water the temperature decreased and so did the pressure causing the can to crumple on itself. The change in pressure was the ingredient that caused the can to react the way it did.

The final lab that I will talk about deals with adding heat to a balloon to make the balloon rise and then takeing away the heat to let it fall. I took a mostly deflated balloon and used a hair dryer to act as the heat for this experiment. By adding the heat the balloon rose to the ceiling once i took the heat out of the equation the balloon began to descend towards the floor. This lab relates to Charle's Law which states that with a constant pressure the temperature and volume relate directly. As the temperature increases so does the volume and as the temperature decreases so does the volume. As the heat was applied the molecules inside the balloon gained more energy filling the space allowing the balloon to gain altitude. However, when the heat was not applied the molecules slowed down causing the balloon to deflate again and descend back to the floor.

Thomas Knight 11/02/11 Lab

Station 4- This shows Charles Law. When the temperature of the can went down, the volume of the can went down, because the cand was crushed. This is because with the sudden change in temperature, the presssure is increased which is why the can is crushed. In Charles law Temperature and volume are directly related. When the temp goes down, the volume decreases.

Station 6- This station is an example of Boyles Law. The pressure and volume are inversly related. When you put the egg onto the mouth of the flask, the volume is constant, and the amount of pressure is increased when the temperature of the flask is decreased. The amount of pressure on the outside of the flask pushes/forces the egg into the flask. Remember the egg is NOT pulled.

Temp and Pressure- This is an example of Gay Lusaac's Law. You pressurize the bottle with air, and you check the temperature. In this law, temp and pressure are directly related so when the pressure goes up, the temperature also increases. The more air you pump, the more pressure is built up inside the bottle. This is because the all the molecules inside are pushing out on the bottle which increases pressure.

jonie's PtV

At station 6 Boyle's law was shown. This was the lab with the egg being pushed into the flask. The egg got pushed in because the pressure inside the flask was les than the pressure outside the flask. The pressure was less because we had just dumped the warm water out of the flask so the molecules wern't moving fast to create pressure. This shows boyle's law because the temperature went down and the pressure pushed the egg down.

At the temperature and pressure lab it showed Gay Lussac's law. This was the station with measuring the pressure and volume. In this station we filled up a bottle with air and then measured the pressure of the bottle and the volume inside the bottle. We did this five different times at different amounts of pressure. This shows Gay Lussac's law because the temperature went up when the pressure went up.

At station 4 Charles's law was shown. It was the station when the can was crushed when it was p;aced in the cold water. In this lab we put hot water in the can and then flipped the can into a bowl of cold water. The can crushed because the pressure was so much and didn't have anywhere to exscape from. This shows Charles's law because when the temperature was cooled the volume of the can went down because the can got crushed.

PTV

PTV
-pressure
-temperature
-volume

Boyle's Law
Has constant temperature, inversely related with pressure and volume. (up, down; down, up)
I think it is the marshmallow lab, at this lab the temperature was the same because there was no physical or chemical changes being made to the temperature. Pulling on the syringe made it so the marshmallow would expand because the pressure was being decreased and the molecule were being spread out so the marshmallow had to take up that space, which made it expand. So The volume was increasing, the pressure was decreasing. Pushing on the syringe, volume was decreasing and pressure was increasing, because the molecules where getting closer and closer. When they where getting pushed together the molecules where taking place of the marshmallow which made the marshmallow shrink.

Gay- lussac's law
Has constant volume, direct relation with temperature and pressure (up, up; down, down).
I think it is the temperature lab with the air compressor. At this lab the temperature would decrease as pressure decreased. The volume stayed constant because the object stayed the same just more pressure was being added to the object. There are more molecules being added when the bottle was being pumped with air so the pressure was increasing; which meant the temperature was increasing because they where bouncing off each other which made more kinetic energy. As pressure was decreasing the temperature was decreasing as well; there were less molecules which meant less movement, and less kinetic energy being formed by the molecules moving.
80oF. 46psi
79oF. 40psi
76oF. 34psi
75oF. 30psi
75oF. 24psi
73oF. 16psi

Charles's Law
Constant pressure, direct relation with temperature and volume.
I think it is the balloon and hot air. The pressure on the balloon stays the same because no air is being added. The kinetic energy of the molecule made them spread apart and become less dense and so less dense objects float, which made the balloon rise to the ceiling. Then once the molecules got cooler the molecule became closer together and made it more dense which made the balloon sink.



Gay-Lusaac's Law-

Has constant volume, temperature and pressure are directly related.
Boiling a pot of water with a lid:
This pot of water has constant volume, and the temperature and pressure both increase. The pot is on the stove or a burner of some sort and it is getting heated. The pressure is being formed because the evaporation of the water is causing pressure to build because of the vapor being let off. the gas molecules are causing pressure. Example: like a tea pot on the stove, when the water is hot enough the pressure builds on the lid and then it starts to whistle.

Boyle's Law:

Constant temperature; pressure and volume are inversely related.
Pressure on a balloon: The temperature is constant there is no source that is making the temperature change. The pressure on the wall of the balloon goes up while the volume goes down. If someone where to step on the balloon the pressure of the balloon goes up because there is force in one place so that pushes the air molecules to the outside adding pressure to the balloon wall. The volume decreases because the molecules are getting pushed together by force from the persons foot.


Charles's Law


constant pressure; temperature and volume are directly related.
On a hot Air balloon: The balloon has constant pressure because the kinetic energy molecules are expanding and moving more so they're forcing constant pressure on the balloon its self. The volume and temperature increase because there is heat being added from the burner. The volume is increased as well, because the more molecules being added, the more fire is being exposed in the balloon. The volume of the balloon is less dense then the air around the balloon which makes the balloon float up into the air.

Gas Laws - Edited Version

Gas Laws that we talked about in class on Wednesday:
Two things remained constant in each lab that we did.
PTV = number of moles stays the same.
Boyles Law - Constant temp. If pressure goes up volume goes down. Pressure and volume are inversely related.
Charles Law - Charlies angles -- way to remember it. Constant pressure. Temp and Volume are directly related. If one goes up the other goes up. If one goes down the other goes down.
Gay-Lusaacs - Volume is constant. Temp goes up, then pressure goes up. Temp and pressure are directly related.
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Station 3: Station 3 was the balloon one, where you kept it next to the heater. When you were at that lab your job was to try to get it to the ceiling. I think that this station was Charles Law. I believe that it was Charles' Law because his law has constant pressure. And temperature and volume are directly related. And the balloon had really hot air on it because of the heater, and the temperature is staying the same because the heater isn't changing temperature. So neither is the balloon. And i think the balloon became less dense, so that's why it started rising to the ceiling. Also,


Station 6: Station 6 was the egg one. This station is where you put the egg at the top of the flask. Then you set the flask in the cold water, then the egg slowly slipped through down to the bottom. Then to get it back up you had to tip the flask upside down, then blow through the top to get it back to the top. Then the last step was to set it in almost boiling water and then it slipped back through the top of the flask, then you could grab it out. I think that this lab was Boyle's Law. I think lab 6 was Boyles law because the egg sank to the bottom while in cold water and that shows his law because his law is if pressure goes up, volume goes down. Also, when we switched the flask into colder water the temp dropped, and the pressure from that pulled the egg down.


Station 2: Station 2 was the marshmallow and syringe lab. This station is where you had to put the marshmallow into the syringe, and pull it back and forth and observe what happens. I think that lab represents Gay-Lusaacs Law. I think this station represents his law because, temperature and pressure are directly related in his law. And in the lab the temperature stayed the same, and the pressure changed each time you pulled the syringe back or released it. And the more i pulled the syringe the marshmallow expanded and got bigger. And of course, when i released it got smaller and went back to its normal size. When i pulled back really slow, you could see how it was big then how it got smaller and smaller the more you released.

For my first picture i put a basketball thats losing its air. It represents Charles Law, and station 3. This picture came fromo google images. The ACTUAL site this picture came off of is: Bildungblog.com. The URL of it is: http://bildungblog.blogspot.com/2010/04/george-bushs-reputation-is-about-as.html

Second picture i put was of a bunch of crushed cans. This picture represents Boyles Law. I chose this picture because it relates to the lab we did and a real life example because sometimes when people are finished with their pop can, they might just crush it just for the heck of it like we did during the lab. And i think a lot of people actually do this in real life. This image came from google, but the actual site is this ---> URL: http://cans.planetark.org/images/public/image-341-al-cans-close-up.jpg

My third picture i put up was of a marshmallow in a syringe. Again, like our lab. But in real life this is actually a good way of showing how Gay-Lusaacs Law works. Obviously i don't just randomly put a marshmallow in a syringe... mainly because I've never really thought of doing that until we started doing these labs in chemistry. After knowing Gay-Lusaacs Law, i think this procedure represents it well. The picture i got was from Google. The actual site it came from was called Little Austinite. And the URL is:

We are finishing up the questions from yesterday and there is homework for those who have homework pg.415 # 69-71. We also started to find out how to make the drinking brids drink by themselves. We turned I. The question from the gmail graphs an the quetions from yesterday

Tuesday October 25

Today in class we learned about Sublimation. Sublimation is starting at the solid state and going to the gas state without becoming a liquid first. We also learned about the triple point diagram amd how it works. The only time you can have a triple point ( when all three stats are seen at the same time. ). T the only time this works is when the ATM is at exactly 1. If the Atm is under 1, than sublimation will ocurr and change from a solid to a gas. If ATM is above 1 than a solid will turn to a liquid. we also learned that air preasure affects the temperature and the states of matter. up high the air prasure is less and things start to boil faster but takes longer to cook. Where down by Florida it takes longer to boil but cooks faster

Happy Mole Day Celebration!

10/24

Today we are celebrating mole day! Even though it was yesterday. So happy late mole day! We are learning what it is . We learned that it isn't Austin powers moley. Or a mole on someone's face. And it isn't a mole like an animal. It is 10^23 X 9.02! We are eating mole day brownies and coloring pictures of moles for an assignment and extra credit!

Brooke Selvages Blog - Friday October 21st

In class today we worked on finihsing the lab questions over the vaporization lab. She also went over question 1 and 2, about the endothermic and exothermic questions. Mrs. Sorensen also went over how to do the slope for the two liquids my parnter and I did. Were having Mole day on Monday & our questions that we are working on are due Wednesday.





The 1st question was: Is vaporization an endothermic or exothermic process? Explain your answer and use diagrams to show what is happening to the molecules.





I found this diffucult before she explained what the endothermic and exothermic process was. But then I was able to answer the question pretty well.

Chemistry October 20, 2011

Today in chemistry the class worked on our vaporization labs. For the vaporization lab we had to create a google spreadsheet of four different liquids, two of which each person was responsible for. After the spreadsheet we were supposed to have a graph of the data done for today.

In class today everybody got a list of questions over the lab, the list is below.

Vaporization Lab Questions

1. Is vaporization an endothermic or exothermic process? Explain your answer and use diagrams to show what is happening to the molecules.

2. Why is the temperature of the thermometer decreasing as the liquid evaporates?

3. Rank the liquids as to which you think is the most volatile( vaporizes the easiest) to least volatile. Explain why you ranked the liquids in this manner.

4. Compare graphs with another group and determine whether your ranking is accurate. List any differences in information.

5. Find a group that had two liquids that you did not have and determine where these liquids would fit into your ranking.

6. Calculate the slopes of each line for every 10 seconds.

7. What do the slopes of the lines tell you?

8. The slopes should be negative. Why should they be?

9. How did the slope of the lines change from the beginning to end and how do you think this occurred?

10. What do you think makes some liquids evaporate quickly and others more slowly?

11. How can you decrease the time it takes for a liquid to vaporize?

12. If the slope of a line from this experiment was 1.4 ୦C/sec, how much would the temperature change in 3.5 seconds?

Blog day

To day in class we are doing our graphs and finishing our assessments. I am working on the states of matter one. I have spent alleles working on the assessments all class and am now on the last one. In my opinion I used my class period well.

jonie's blog

today in chemistry we learned that flubber and oobleck are non Newtonian fluids. There are two types of non Newtonian fluids: dilatant and thiotropic. Dilatant is when the pressure applied becomes more viscus. Thiotropic is when the pressure applied becomes less viscus. We also did a lab with dry ice. we turned dry ice into a liquid and then back into a solid.

ice n' salt

today in chemistry we did a lab. we used a beaker, test tube, ring stand, ice, salt, and a graphing caluclator that recorded the temperature every three seconds to make three hundered points that took fifteen minutes. we did this lab to see what the temperature would do. it started to decline then it flat lined, because it was at the freezing stage then once it turned to a solid, the temperature started to drop again.

Restorining the evergldes

magazine name: scince world has save our swamp on the front

kir fordham says that the areas in florida and miami areas are loseing their everglade aras. the everglades is home to a wide variety of plants and animals over nine hundred kinds of fish and crustaceans.dave hallac a biologist says that there are many pumping stations that divert the water from it is suposed to be going. This cuts back on the water givn to the animles that live in the everglades. THerefore causing them to leave. when the animles begin to leave we industrialize. we start building our houses and roads and organizations on top of there old home all be cause we thought we need to take up more space. over 7 million people livein florida so that just means thats seven million minds that should be working on a soloution to get the everglades back to its greatest glory.

new article secrets of a sno flake: from the same magazine

at charleston middle school the kids are studying snow flakes. the kids would put there microscopes in the freezer and let flakes fall on them this was the easier trail to take. my favorite kind of snow flake is a dendrite because it has a cool design. after being heated or cooled the snoflake can change from a dendrite to a regular prism or hexagon shape.

Paragraph Project

Science World, September 7, 2009

Teen Dinosaur Hunters

Before the incoming Freshman's first year started at The Webb School, they all took a trip into the California Desert to a dig site. This dig site was a site that contained prehistoric fossils ranging from teeth, turtle shells and one of the largest collection of fossilized footprints totaling over 150,000 discoveries. The Raymond M. Alf Museum of Paleontology is the only accredited museum on a high school campus in the country.

I Want That Job

Manuela Veloso is a robot scientist that created the world's first Robot World Cup for soccer. She enjoys trying to create ways to have robots work together in team situations. Though the RoboCup is a small scale test she is also trying to create robotic firefighters. A robot scientist makes about 40,000 to 50,000 dollars per year, with a PhD the salary could jump to 100,000 for those who work for universitie. The wage could even double if the scientist works for a company.

In Search of Snow Leopards

Tashi Tundup and Steve Winter journeyed into the Indian Himalayas with their team to locate the elusive snow leopard. At 4,000 meters they had entered the cat's territory, hard to believe that hardly anything grows that far up do to the lack of oxygen. Scientists claim that snow leopards are on the endagered speices list due to the fact that the cat's eat the people's livestock so they are killed. poaching is also a huge problem for the leopards.

Squishy Snack

In Northern Thailand a fast food chain serves nothing close to french fries. A restaurant called Insect Inter serves fried insects, a major snack there is an insect larve in its immature form. It is said that 80 percent of the worlds population practices entomophagy, ths is also known as eating bugs. Bugs are packed with calcium and iron along with tons of minerals and nutrients.

Chemistry - Science Articles. Period 8. October 12

Article 1 - PINT-SIZE POWERHOUSES (page 4 in blue Science World magazine, March 15-April 5 2010)

Summary: This article was about how scientists are tapping into the suns energy and creating a photo voltaic cells that turn sunlight into limitless energy. These cells are as efficient as roof-top solor panels, but can do more and it is cheaper by using these kinds of cells. The cells are very flexible, so they can be attached to backpacks and can also be used to recharge things like cell phones or surround buildings which produces elictricty. Their goal is to reduce the cost of the solar power.


Article 2 - Wolves in Decline ( page 6, green magazine, April 19, 2010 )

Summary: This article was about how Gray wolves once were on the endangered list and then they got delisted. They started off in the United States, then they got put on the endangerment species list. The Wolves were then put in the Yellow Stone National Park in 1995. The wolf population then grew larger enough for them to be taken off the list. They are now back to normal, and living well because there are enough supplies and food to keep them around and alive.

Article 3 - Hairy Hearing (page 22, green magazine, april 19, 2010)

Summary: This article was DISCUSTING! It was about a man naamed Radhakant Bajpai that has hair so long coming out of his ears that he has to comb it. He has set a Guinness Worl Record for having the longest ear hair of any human being. It said as people age, especially men ear hair becomes longer and thicker. His especially does!

Article 4 - Shrinking Sheep ( page 7, black magazine, October 26, 2009 )

Summary: This article was about Soay Sheep on the Island of St. Kilda, north of Scotland. They've reported that over the past few years the sheep are SHRINKING, they have gotten alot smaller and scientsts think its because of the climate change. The weather has becoming alot warmer in recent decades probably because of increased amounts of gases. Overall the sheep have shrinked about 5% in the past 20 years.

Science World Articles 10.12.11

SCIENCE WORLD: P.8 10.12.11

PINT-SIZE POWERHOUSES: (pg. 4, blue Science World, March 15-April 5, 2010)

summary: This article was about how scientists are tapping into the suns energy and creating photo voltaic cells that turn sunlight into limitless energy. These cells are as efficient as rooftop solar panels but can do more and it is cheaper by using these cells. They are very flexible so they can be attached to backpacks and be used to recharge things like cell phones or just surround buildings & that produces electricity. Their goal is to reduce the cost of solar power.

WOLVES IN DECLINE: (pg. 6, Green Science World, April 19, 2010)

summary: This article is about how gray wolves once were on the endangered species list and then got delisted. They started off around the whole United States, but what put them on the endangered species list was the habitat shrinking and over hunting. The wolves were put in the Yellowstone National Park in 1995. After that, they wolf population grew enough for them to be taken off the list. Recently, disease and smaller food supply has taken over for the wolves. Wolves eat elk, and the elk population has dropped so therefore the wolves population dropped because it made it harder for them to find food. Now since the decline in wolves, there is now enough resources for them to survive and the park now has a small enough number to support them.

HAIRY
HEARING: (pg. 22, Green Science World, April 19, 2010)

summary: This article is about the man who set the Guinness World Record for having the longest ear hair of any human being! His ear hair measures out to be 13.2 cm. long! (5.2 inches) He has to comb his ear hair because it is so long. He inherited only hairy ears, so he is lucky, because abnormally hairy noses come with that gene!

CATCHING SOME RAYS: (pg. 5, Bug Science World, September 7, 2009)

summary: This article is about how lizards regulate how much vitamin D they get. They love soaking up the sun because they need their Vitamin D but it depends on how much vitamin D they are eating in their diet. They equal it out very effectivley. They spend less time in the sun if they eat more D, and spend more time in the sun if they don't eat that much of it in their diet.

Oobleck Blog

Talked about the three upcoming assessments that are due by Friday.  Worked on our temperature  Discussed oobleck, and observed them as the finished projects of our lab. Had to defend your position on whether you believed that the oobleck was a solid or a liquid.

Here are the steps     
does it bounce like a ball?   
pull out --> 1.) slowly  --> 2.)quickly    

And like I said defend your position on whether you believe your Oobleck is a liquid or a solid

10/11/11

today we went to the library and took two assessments on the computer. one was about states of matter and the other was chemical vs phisical. we can take them over and over again and she will take the best score as of friday.

chemistry labs

materials: two spoons, two pipets, water, calcium chloride, sodium bicarbonate, phenol red, sandwhich baggies, and saftey goggles.

steps:

1. put your goggles on and get your materials
2. put a spoon full of calcium chloride and a spoon full of sodium bicarbonate in one corner of the baggie.
3. put one pipet of water and one pipet of phenol red in the other corner. ( make sure the liquids dont mix with the powders till later in the lab.)
4. close the baggie tight and shack the bag.
5. after the reaction is done open the bag waft.
6. dispose of everything properly and clean you area

warnings:

1. calcium chloride may iritate the skin
2. phenol red stains

observations:

1. gets hot
2. turns yellow
3. bubbles
4. can hear it fizziling
5. bag fills up with gas
6. cools down
7. turns to orange
8. bag popped
9. smells like the phenol red

lab questions:

1. the calcium chloride got warm when mixed with the liquids and the sodium bicarbonate got cold when mixed with the liquids.
2. the first experiment went from hot to cold but the individual experiments stayed the same temperature.
3. it turned yellow then at the end it turned orange. the sodium bicarbonate turned yellow when mixed with both liquids and turned white when mixed with just water.
4. yes as the chemicals bubbled the color started to change.
5. the controlled experiments that proved we needed a liquid was when i tested the powdered substances with a liquid it had a reaction but if i didnt use liquid there was no reaction.
6. when the baggie filled up with air and fizzled and changed color. they all worked together.
7. mix calcium chloride with water and see what happens.
8. no it does not always mean a chemical reaction occured because if you boil water no chemical reaction took place.

10.7.11

Flubber:
Flubber is a solid
It has a definite shape
It bounces if put into a ball shape
When you rip it apart it pulls apart
When you leave it sitting long enough the bottom gets flat

The obleck is like concrete when you mix it.
The ingredients are water & corn starch. You mix them together & it gets really thick & hard to stir. You can't stir it with a stirring stick because it will break. (from experience) You have to stir with your hands

Chemistry in a Bag

Equipment:Calcium Chloride, Phenol Red, Sodium Bicarbonate, water,zip-lock bags, white spoon, red spoon, and two pipits.





Observations before experiments:


Calcium Chloride- chunky, solid, and has a odor


Phenol Red- red, has a strong odor


Sodium Bicarbonate- small grains, and a sweet odor





Post Lab Questions:


1. When you mixed a solid (Calcium Chloride or Sodium Bicarbonate) with a liquid (Phenol Red or water).


2. No because the temp. change was a chemical reaction.


3. The color change observed in the overall reaction was that when you mixed the Phenol Red with any of the solids it turned a yellowish color.The controlled experiments do suggest that the color change is caused when you mix the different chemicals together.


4. Ne because when the chemical reaction is occurring color, temperature and the bubbles are all the effects of the chemical reaction in this experiment, they aren't always seen occurring at the same time though.


5.The Calcium Chloride by itself, the Sodium Bicarbonate by itself, and then the two of them mixed together. No reaction occurs in the absence of water either.


6.The color change and the temperature change could suggest that a new substance was formed. The liquids and the solids mixed together could be responsible for the new substance.


7. You could mix calcium chloride and water together and then let the water evaporate to see if you are left with calcium chloride. If you are left with a different substance or no substance at all you would know that the hypothesis was incorrect.


8. No temperature change does not always indicate that a chemical reaction has occurred, because if you boil water, it is still water but just hotter.

Wednesday Oct. 5 (mythbusters)

Today most of the class watched Mythbusters and the people who where gone yesterday made their flubber and their obleck. On Mythbusters we saw three myths, bannana peel slip, double dipping, and homemade diamonds. I was following the double dipping myth and i didn't get to see the end ,but what i did get to see said that it is hard to test due to there being to many variables. Later on the guys made sanitary dip and chips than they started testing again. I think that today went well and everyone did what they where supposed to do.

Chemistry 10/3/2011

We began class by using the poll on the internet. Make sure that you know that conductivity is a physical property. Make sure to know that boiling point is a physical chage, due to the fact that it is still the same substance. Make sure to know the molecular makeup of a solid, liquid, and gas.

The molecules in a solid are densely packed together and vibrate sold. There are two types of solids amorphous and crystalline. Amorphous absorbs energy and crystalline solids do not absorb as much energy. Crystalline solid molecules are very oranized which makes the substance more solid. Amorphous solid molecules are very unorganized which makes a solid less solid. Solid molecules are so closely arranged that is cannot be compressed. Solids have a definent shape and volume.

The molecules in a liquid are a little further from eachother and they move in a slide and glide motion. Which means they can slide past eachother, they will not collide. They also can take the shape of its container. A liquid has a indefinant shape but a definant volume. When force is put on a liquid the molecules will all move together.

The molecules of a gas are very spread out and the molecules have alot of energy with alot of collisions happening. Gases can be compressed, however they have an indefinant shape and volume. Compressing a gas created things to implode and explode.

Plastic baggy lab

In this lab we tested calcium, phenol red, sodium bicarbonate. Phenol was red liquid and calcium was a bead like powder and the sodium was a whit powder. The testings went in this order all to gather for the first tes and the bage was oragne smelled like Rubbing alcohol, and it was warm. The second test was calcium with red and it was pink and smelled like rubbing alcohol, third was sodium and water it was hot. The fourth was red and sodium it was very hot, the fifth one was calcium and water, it was cold. The sixth experiment was calcium and sodium and red and it was hot and orange. The next is the seventh and final test and it was calcium, sodium and water, it was hot for a little bit and did nothing else's it was white.

1.due to the experiments tests I would say that either the phenol red or the water Is responsible for the heat and or temperature change.
2.in the individual tests their was an temp. Change and it was due to either water or phenol red. One the tests turned out to have a cold temperature.
3.the color change in the tests were due to the phenol red mixing with other substances like calcium and water.
4.usually i see both a the same time but i think that the color would come first.
5.i think that the water played a big part in the chemical change in the expirements
6.the chemicals responsible to the change in substance is red and water and sodium bicarbonate.
7.the expire,ent would be like mixing them together and it wouldnt change for and it would heat up
8.sometimes thats what i look for when i am conducting and expirement.

The Baggie Experient

For this experiement that our class did in chemistry period 8 we mixed water, phenol red, sodium bicarbonate (Baking Soda), calcium chloride. When all of those ingredients get mixed together they made a yellow/orangeish hot mixture that made the ziplock bag expand after you stop shaking it begins to cool down and eventually get really cold. The smell of the chemical change and after effects that were going on had a paint smell to it. The amounts of how much ingredients we used was about 1 small spoon full of calcium chloride and 1 small spoon full of sodium bicarbonate. For the liquids i used about 1 pipet full for water and pipet full for phenol red.





I had to find out what was causing all these reactions to happen so i starting doing experiments with some ingredients cut out. First i did Water and Baking soda together, after that the bag did not expand and it did not heat up or change colors it just got cold. Water and Calcium chloride mixed made the bag smell like paint the bag did not expand it did not change colors but it did heat up.





After i got done with the water tests it was time for the phenol red i started with calcium chloride and phenol red. After shaking the baggie it got hotter and turned like the yellow orangish color it did not heat up. The phenol red and baking soda then cause a thick pink / purple liquid color there was no smell and the bag did not expand.





After these 4 experiments i tried everything except water and that was the key. Everything happened as the first time i was going with all ingredients except for this time it took a lot more shaking to make the bag expand so i am guessing that the water just makes the chemical reaction to speed up.

Questions :
1. Everything but water cause the reaction. Water just sped the reaction up.
2. The temperature changed when you shaked the bag it got hotter when you stop it gets cold.
3. It changed orange/ yellow sometimes when you took some chemicals out it turned purple/pinkish.
4. Yes, because tempeture goes up when the reaction occurs, in order for that to happen you have to shake the bag.
5. The absence of water makes the reaction slower.
6. Dry with dry then phenol with both.
7. Heat and gas test.
8. If you stir sugar with water that doesnt change the temperature but it is still a chemical reaction so no.

wednesday 29

today we are working on finishing up our baggy labs and the write up on the blog. vocab due tomorrow for homework people and then we have a vocab quiz tomorrow. the info an the other question in are on mrs. sorensen web page. =)

lab #1

we worked with calcium soudium bicarbontae and phenol red. when we mixed all 3 of these with water and shook it up in a bag and watch the changes appear. the chemical changes where.

1. heat




2. gas was made




3. the red changed to yellow/ orange




4. bubbles formed.




5. the smell of rubbing achool

then when we tried to find out what made what chemical reaction happen. we found that when we mixed the water with the calcium and soudium bicarbonate that we the heat and gas reaction. then when we mixed calcium and the phenol red and found that it makes a hot pink color and some little bubbles. then we put the soudim bicarbonate with the water and found that that made heat. then we put the phenol red and the soudium and that made heat. then we put the calcium and water and the chemical reaction was cold. then last we mixed he phenol read and the calcium and the soudium bicarbonate and that made the yellow color and the gas and the heat.

1. water was the change for the heat.




2. yes the waterand calcium made a temp change to cold and the temp change that we got was a hot temp.




3. the color we got for the 1st time was orange and yellow and the one that got us that was calcium and soudium and phenol red.




4. no because the bubble appear the minute that the chemicals meet each other and the color takes time to mix.


5. when i took water out of the controled exsperiment it doesnt change anything. all the reactions happen just the same. so we put the phonel red soudium and calcium in a baggy.


6. there was less in the baggy and the baggy popped. and we did not need any of the water to get th ereaction to happen.


7. then nothing would happen like the heat and gas would not happen and the color would not be the same. we would test it by leaving out it out.


8. yes it does because the elements will be doing something different. and some atoms move faster or slower causeing a reaction to happen so either way a reaction happens.
   
   

the begining

so this is the first day of blogging and i wasnt really ready but here i go. so in class today their are people doing some labs and others might be takeing their tests but i got stuck with blogging o well it allright. also today we chose kind of our class name for the bloggin page my suggestion was science hamsters, but the winner was lab rats i dont agree with it but it kewl. Anyway back to whats happening in class,we also created our blogging accounts sry i left that out in the begining witch thisis the begining of the whole blogging thing there in lies the name the begining.

When i mixed the calcium chloride and baking soda with the phenol red and water it started out really warm and then it expanded in then it expanded and got coldish. It smelt like rubbing alchohal.

When i did the same thing but minus the water it made like a yellowish color and started out warm and turned cold and the gas expanded in the baggy.

When i did all of the same steps but didnt put in the phenol red it made a white bubble substance that got really hot and made bubbles.

When I mixed the phenol red and the calcium chloride it got really warm and smelled like rubbing alcohol.

When mixing the phenol red and baking soda together it smelt like rubbing alcohol and got really cold.
When I mixed the calcium chloride with water it got really warm and fizzled a little.
Baking soda with water made it really cold and it looked like milk.

1. I think the different substances made it feel different. Like when we put the two together it got hot and cold.
2. No, there was no different temp change.
3. Yellowish orange,no it takes all those chemicals to make it that color.
4. The color usually came first and then the gas formed.
5. When they were seperate nothing would happen, when put together it caused a reaction.
6. Color, smell, and when the substance turned into gas.
7. Change the liquid and see if it would do the same.
8. No just depends on if your doing so something to change the tempature.
4.

Bag-O-Chemistry

For this experimant we used four differnet substances; Calcium Chloride, Sodium Bicarbonate, Water and Phenol Red. We first obtained a plastic ziplock bag to hold our substances. Then we used one scoop of the calcium chloride, which is a skin irritant, one scoop of sodium bicarbonate, commonly known as baking soda, and one pipet filled with phenol red, which stains clothes and skin. We made sure that the water and phenol red did not mix with the calcium chloride and the sodium bicarbonate.



When we had all the procedures finished we mixed the substances. Immediatley gas began to build up within the ziplock bag and the bag also began to heat up. When all the substances mixed the color became a bright orange-yellow color. After the reaction was done we opened the ziplock bag and wofted the substances. Imeediately it smelled of rubbing alcohal. We rcorded our data and observations and discarded the bag.





We then began to test different possible mixtures to figure out what substances created what reactions. The first mixture we tested was Calcium chloride mixed with water. With this mixture heat was produced and the calcium chloride did not dissolve, it was non-soluable. The second mixture we tested Sodium bicarbonate mixed with water. With this mixture a cold reaction was present. The third mixture we tested was Calcium chloride mixed with phenol red. With this mixture heat was produced and a rubbing alcohal scent was given off. The fourth mixture we tested was Sodium bicarbonate mixed with phenol red. With this mixture a cold temperature was produced. The fifth mixture we tested was Calcium chloride mixed with Sodium bicarbonate mixed with water. With this mixture heat, gas and bubbles were produced. The last and final mixture we tested was Calcium chloride mixed with Sodium bicarbonate mixed with phenol red. With this mixture heat was produced followed by cold temperature, gas and the mixture turned into a yellow color that smelled of rubbing alcohal.





1) Calcium Chloride mixed with a liquid (heat) and Sodium Bicarbonate mixed with a liquid


(cold)





2) No, we noticed the heat and cold again.





3) In the overall reaction the color was a bright yellow. Phenol red mixed with Sodium bicarbonate was a bright pink color. Phenol red mixed with Calcium chloride was a bright pink color.





4) No, because we observed color and temperature in different mixtures where gas was not present.





5) In the beginning we mixed the Sodium bicarbonate and Calcium chloride together with the absence of a liquid and nothing happened.





6) Evidence that supports that a new chemical substance that was created by the overall reaction was the production of gas, temperature, color and the appearence that there was less of the substances after the reaction.





7) Test Calcium chloride with other liquids to see if a reaction takes place.

8) Temperature changes do not always indicate chemical reactions because it might just be showing a chage of state.

We mixed 4 chemicals, recorded their reaction, then depicted which chemical mixtures contributed what reactions.



Chemicals
Calcium Chloride- white, ballish clumps, no smell
Phenol Red- Red liquid no smell (will stain skin and clothing)
Sodium Bicarbonate- white, powdery, no smell (baking soda)
Water- clear liquid, no smell

We used one spoon of Calcium Chloride, one spoon of Sodium Bicarbonate, one pipet of Phenol Red, one pipet of water, per test.





all four chemicals mixed reactions- heat in the begining, expanding, bubling liquid, color change,cold at the end, thick liquid at the end (dried to the sides of the bag), simlar smell to paint.





Water and Sodium Bicarbonate reactions- Coldness, thickness





Water and Calcium Cloride- heat, smells like chlorine





Phenol Red and Calcium Cloride- hot, smells like rubing alchohol





Phenol Red and Sodium bicarbonate- coldness, thick liquid, no smell





Sodium Bicarbonate, Calcium chloride, and Phenol Red- yellow paist, expanding











1. Water and Sodium bicarbonate made it cold, while the Phenol Red and the Calcium Cloride made it hot.





2.no because in the overall mixture we had the heat and the coolness.





3. the overall mixture produced a yellow paste. the chemicals responsible for the color change were sodium bicarbonate, calcium, and phenol red.





4. yes because to change from a liquid to gas you need a temerature change.





5. the solid chemicals will no nothing without one of the liquids.





6. a new chemical is produced because there is a phisical looking change. either of the liquids combined with either of the solids.





7.

Chemistry in a bag

For this lab we mixed:

Calcium Chloride
Sodium Bicarbonate
Phenol Red
Water

Safety concerns:
Phenol red stains


When mixed in a bag, the chemicals became hot and gas was produced. After shaking it for a while the mixture became cold and stopped reacting. When opened the gasses escaped and there was an odor of paint. Next we mixed all possible combination to confirm what reacted with what to create the conditions observed.


1. Phenol red and Calcium Chloride.
2. Phenol red and Calcium Chloride created heat.
3. The overall color was orange. The phenol red mixed with Calcium Chloride caused this.
4. No, water and Sodium Bicarbonate caused gas to be produced without a temp. change.
5. All possible mixtures where tested.
6. The change in color, temp and odor suggest the creation of a new chemical substance.
7. Combine Calcium Chloride with water and see if anything changes.
8. In this lab it does. In general temp. changes are caused by the breaking and forming of chemical bonds, resulting in the creation of other chemicals.

• we had to do a lab that involved taking 4 different chemicals, calcium choride, phenol red, baking soda and water. we had to mix all of those chemicals in a bag and obsever what was happening. we had to write down our observations. After we observed all four chemicals mixed together we had to experiment and find out where all of the observations were coming from. so we mixed just two of the chemicals together and obseved what happened such as the phenol red and the calcuim chloride. Then we went on experimenting with all four chemical mixing only two at a time.


• We used one spoon full of the calcium chloride, and the baking soda then we used one pipet full of the phenol red and the water.


• With all four of the chemicals mixed together our observations were that the color changed to a bright yellow color, it fizzed, it was producing gas and heat and had a slight odor. With only the phenol red and calcium chloride it got hot, and smelled like rubbing alcohol. With water and calcium chloride it got hot and smelled like chorine. With water and baking soda it got cold and turned into a thick paste. With phenol red and baking soda it was a cold thick paste with no smell. With the two solides and the phenol red it turned into a yellow paste and formed a gas.

1. the calcium chloride


2. with the phenol red and the baking soda it got cold right away but with all four mixed it got hot first then it got cold.


3. it turned yellow and the calcium chloride, baking soda, and phenol red mixed caused the color change


4. yes becasue substances have to change


5. we did all of the controlled experiments we could to evaluate everything that happened everything happened with the absence of water except for the fizzing


6. the plastic bag filled with air which shows it was producing a gas, and the two solids and phenol red mixed together caused that.


7. you could mix just calcium chloride and water and observe what happens.


8. yes because heat it formed from a chemical reaction.

• some of the observations were with the four chemicals mixed together it changed color and heated up and it was producing a gas because the bag filled with air and looked like it was about to blow up.

Chem in a bag

what you used?

baggy

pipet

water

sodium bicarbonate

calcuim chroride

phenol red

Obbservations

Alone all of the substances were obbserved. The calcium chloride was white. It was in the form of little balls or beads. There was no smell to the substance. the sodium bicarbonate was also white. It was a powdery substance with no smell. The phenol red was a koolaid red. It had an oder of alcohol .


what did you do?


In a snack baggy I combined one spoon of Calcuim chloride, one spoon of sodium bicarbonate, one pipet of phynal red, and one pipet of water. We put the calcium chroride and sodium bicarbonater in one corner and water and phenal red in the other. Shut the baggy so that no air is trapped inside. Combime the two combinations together. Set the baggy in the palm of your hand. shake the baggy constantly.

what happened?

Together the substances turned a yellow color. The chemical inside the baggy stuck to the sides of the baggy. It started heating up, and the baggy stated to expand. Some of the classes baggys blew up because of the air preasure in the baggy. The air inside the baggy smelled like paroxide.

post lab questions

1.Calcium Choride with a liquid

2.no

3.from red to yellow, the phenol red, the calcium chloride, and the sodium bicarbonatemixed together

4.no, you don't have to have the the temp./color changes to form the gas bubbles

5.at the begining we kept them seperate and nothing happened so yes, we combined phenol red, calcium chloride, and soduim bicarbonate and it had a similar reaction

6. it changed colors and had a new odor, the phenol red, the phenol red, the cacium chloride, and the sodium bicarbonate

7.combime the calcium chloride with another liquid other than the phenol red to see if it has the same reaction.

8.yes, because heat is formed by a chemical reaction

Chem in a bag

What did you use?

Snack bag
pipet
One spoon full of each substance was used in each trial.

A-baking soda
-was a powder substance

B-phenol red (stains)
-was a liquid substance

C-calcium chloride (skin irritant)
-was a substance that was in small grains

water
-was a liquid substance


What did you do?


Trial 1:
I took the four substances and combined them into a baggie. Once combined and shaken up fizzed and was extremely hot after a few seconds got extremely cold, when the bag was opened it had an odor.



Trial 2:
Substances A, B, and C were combined and got very warm then started to fizz then the bag expanded, when opened had an odor.


Trial 3:
When A and C were combined the bag just got warm, nothing fizzed and the bag did not expand, although when opened it stil had an odor.


Trial 4:
When B and C were combined the only change was the substances mixed. There was no temperature change and no expanding or contracting of the bag the substance still had an odor when the bag was opened.


Trial 5:
when A, B, and water were combined the substances mixed, fizzed, got warm but did not expand. When the bag was opened there was no odor.


Trial 6:
when A and water were combined the substances mixed and got extremely hot.


Trial 7:
When B and water were combined the substances mixed and got extremely cold.

With this lab we took a bag and used one spoon full of the substance. We did multiple test to find out what substances had which effect. Substance A caused the bag to expand. Substance B caused the color change. Substance C caused the temperature change in the bag. When added water helped to set all of these substances into motion.

Post lab questions

1. Calcium Chloride with a liquid

2. No in all of our individual trials we got both the hot and cold

3. a)Red to yellow

b)Phenol red Calcium Chloride and Sodium Bicarbonate

4. No, you dont have to have the color and temp. change to cause the bubbles

5. when you keep liquids and solids seperate there was no reaction, yes

6. a)It has a new color and odor

b)Calcium Chloride and Phenol Red

7. Combine the calcium chloride and the phenol red or any other substances to see if they cause the same change.

8. In this lab I think the temperature change did show a chemical reaction, although this may not always be true.

Chemistry in a Bag

When my partner and I mixed Calcium Chloride with Phenol Red and water, it started to fizz. It turned a yellowish orange and started to bloat. It had an odor that smelled like rubbing alcohol.

When we mixed Calcium Chloride with Sodium Bicarbonate together with just Phenol Red, it turned hot, and then really cold. It was a yellowish pink color. It was really chunky at first. We had a very hard time getting everything to disolve. It had an odor like alcohol.

When my partner and I mixed sodium bicarbonate with calcium chloride Together with just water, it turned white and started to foam. It got really hot and then cooled down really fast. It obtained no water.

When we mixed calcium chloride with phenol red, it got really warm. It turned a reddish pink color. The bag didn't bloat or swell up. It had a very strong odor. It smelled like rubbing alcohol.

When we mixed sodium bicarbonate with phenol red, it turned red. It got really hot and the bag started to swell. Then the substance got really cold.

When we mixed Calcium Chloride with water it got really hot. It stayed white, and foamed a little. There was no odor.

When we mixed Sodium Bicarbonate with water It was almost the exact opposite of the Calcium Chloride. It got really cold. The substance was really milky. There was also no odor like the Calcium Chloride.

Post Lab Questions:

1. Sodium Bicarbonate with Calcium chloride mixed together with Phenol Red and Water.


2. No, we observed everything and took our time to realize any possible changes.


3. The only actual color change was when we added the Phenol Red. When it was added it turned different colors like, reddish orange, but then changed to yellow or pink. Different chemical combinations willend up with different color changes.


4. I didn't observe everything at once so I really don't know. I observed everything one at a time.


5. You need a liquid to get a reaction out of these chemicals. Nothing will happen if you don't add the water or Phenol Red.


6. Because when you mix chemicals together with other chemicals, a chemical reaction takes place and you have a new chemical. Calcium Chloride and Sodium Bicarbonate mixed with Water and Phenol Red.


7. Take 2 separate bags, put Calcium Chloride in both. Put water and Phenol Red in one bag. But only Phenol Red in the other bag. Seal both bags. Then shake and observe what occurs.


8. A temp change might not always occur. All chemicals react differently. They will not always create a Temp. change. Some may create a hotter temp. Some might create a colder temp. Some might not even create a change in temp.
   
   

Chemisrty In a Bag - Chem lab

Materials needed: safety goggles, baggies, a pipet, two separate spoons, one for calcium chloride, one for sodium bicarbonate, water, phenol red.

Steps: First you get a baggie and decide what items you want to experiment with. Then when you decide what liquid and what powder you want to use, you take the powder of your choice and put it in one corner of the baggie. Then take either the water or the phenol red and put it in the other side of the baggie. Then start shaking it all together till they start mixing and you start seeing things happen. Then when you think the reaction is done open the baggie and waft it. Also note, if it is hot or cold. Or even if the bag expanded or stayed its original size. Just keep doing this, but each time use different mixtures and then you will find out what makes it hot what makes it cold and what makes the bag expanded. Then when you think you know what does what, you are done. Make sure you clean up good.

Observations: Purpleish color, a pinkish color, yellow or orange color, hot, cold, big, small, smells like peroxide, filled with gas.

Other things you may need to know: Phenol red stains clothes and the calcium chloride may irritate your skin. Also, when experimenting be careful because the bag may pop.

QUESTIONS:

1. I think the Calcium Chloride made the temperature change in the overall reaction.

2. Phenol Red and Calcium Chloride produced heat.

3. The overall color that i saw was orange. The Phenol Red and Calcium Chloride caused this.

4. No, because the water and Sodium Bicarbonate caused the gas, and it had no temp.

5. All of the mixtures were tested.

6. The testing of the change of temperature, color,feeling, smell make a new chemical substance.

7. Just combine Calcium Chloride and Water, and see what happens after.

8. Yes, the changes are caused by the general temperature and the breaking and forming of chemical bonds that result in the creation of other chemicals.