Wednesday, October 26, 2011
Tuesday, October 25, 2011
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
Monday, October 24, 2011
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!
Friday, October 21, 2011
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.
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.
Thursday, October 20, 2011
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?
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?
Tuesday, October 18, 2011
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.
Saturday, October 15, 2011
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.
Thursday, October 13, 2011
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.
Wednesday, October 12, 2011
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.
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.
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.
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.
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.
Tuesday, October 11, 2011
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
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.
Friday, October 7, 2011
chemistry labs
materials: two spoons, two pipets, water, calcium chloride, sodium bicarbonate, phenol red, sandwhich baggies, and saftey goggles.
steps:
- put your goggles on and get your materials
- put a spoon full of calcium chloride and a spoon full of sodium bicarbonate in one corner of the baggie.
- 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.)
- close the baggie tight and shack the bag.
- after the reaction is done open the bag waft.
- dispose of everything properly and clean you area
- calcium chloride may iritate the skin
- phenol red stains
- gets hot
- turns yellow
- bubbles
- can hear it fizziling
- bag fills up with gas
- cools down
- turns to orange
- bag popped
- smells like the phenol red
- the calcium chloride got warm when mixed with the liquids and the sodium bicarbonate got cold when mixed with the liquids.
- the first experiment went from hot to cold but the individual experiments stayed the same temperature.
- 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.
- yes as the chemicals bubbled the color started to change.
- 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.
- when the baggie filled up with air and fizzled and changed color. they all worked together.
- mix calcium chloride with water and see what happens.
- 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
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
Wednesday, October 5, 2011
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.
Monday, October 3, 2011
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.
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.
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