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.
Monday, November 21, 2011
Friday, November 11, 2011
Thursday, November 10, 2011
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.
Wednesday, November 9, 2011
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.
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.
Tuesday, November 8, 2011
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.
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.
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.
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
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.
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.
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.
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."
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."
Monday, November 7, 2011
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.
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)
(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 LawBoyle'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
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.
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.)
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.
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.
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.
Sunday, November 6, 2011
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.
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.
-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.
Wednesday, November 2, 2011
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:
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