Friday, September 30, 2011
Chemistry sept. 30
Today we finished the vocab quiz and got signed up for this system with your cell phone. You sign up by texting the code to the number. In class we used this by texting either a letter or a number according to the question on the overhead. The questions were all about whether the things asked about were intensive or extensive. One question during class was, is density intensive or extensive? Since it does not matter how much it is, the answer was intensive. Intensive is where the amount is independent and doesn't matter, while extensive is dependent on the amount, such as mass. All of the questions using this style of learning were either intensive or extensive.
Wednesday, September 28, 2011
In class today we finished the blog about the chemistry in a bag. we also have a quiz tomorrow in class over vocab. we wrote a lab in class about chemical reactions the lab contain questions about how it got cold and hot. It also had questions about what happened in the lab. remember that questions are on Mrs. Sorensen's website along with vocab practice games.
Chemistry in a Bag
Procedure:
First we put the 1 scoop of both dry solutions into the bag. Calcium Chloride and Baking Soda (Sodium Bicarbonate) were put into one corner of the bag and sealed off. In the other corner we put one pipette of phenol red and sealed it off. We had to seperate them so they wouldn't interact before we sealed off the bag. Then we took all the air out of the bag and sealed it. Next we untwisted it and let them interact. We then observed the three chemicals as they went from their own forms of white powder and red liquid to a warm,orange color. We continued to watch as the bag began to fill up with gas and turned yellow in color. Slowly the calcium chloride and the baking soda began to dissolve and seemed to evaporate. The bag didn't explode but it did have a pillow-like structure. Next we tested some different chemicals such as phenol red with calcium chloride. We found out that when the substance becomes warm, it is because of the calcium chloride. Calcium chloride, when mixed with a liquid, turns very warm which is like the rock salt we use when the roads get icy. The phenol red when mixed with water stays a red color. Mix the two solid forms with the liquids, and the bag will fill up with gas, become warm and turn an orange-yellow color with a gassy, rotten egg odor.
1. Calcium chloride causes the temperature to turn to warm.
2. The controlled experiment without calcium chloride did not have a temperature change.
3. In the overall reaction the color changed to a orange color. In the controlled experiments we could don't find what caused the color to change.
4. The temperature changed before the gas bubbles formed.
5. All experiments required a liquid for a reaction to occur.
6. Gas is the new substance formed when all chemicals are mixed in the bag. Chemicals responsible are both the solids and water.
7. An experiment that could be tested is adding different amounts of water to see if calcium chloride's physical identity change occurs.
8. A temperature change doesn't always indicate a chemical reaction because you could see a color change or a physical change.
First we put the 1 scoop of both dry solutions into the bag. Calcium Chloride and Baking Soda (Sodium Bicarbonate) were put into one corner of the bag and sealed off. In the other corner we put one pipette of phenol red and sealed it off. We had to seperate them so they wouldn't interact before we sealed off the bag. Then we took all the air out of the bag and sealed it. Next we untwisted it and let them interact. We then observed the three chemicals as they went from their own forms of white powder and red liquid to a warm,orange color. We continued to watch as the bag began to fill up with gas and turned yellow in color. Slowly the calcium chloride and the baking soda began to dissolve and seemed to evaporate. The bag didn't explode but it did have a pillow-like structure. Next we tested some different chemicals such as phenol red with calcium chloride. We found out that when the substance becomes warm, it is because of the calcium chloride. Calcium chloride, when mixed with a liquid, turns very warm which is like the rock salt we use when the roads get icy. The phenol red when mixed with water stays a red color. Mix the two solid forms with the liquids, and the bag will fill up with gas, become warm and turn an orange-yellow color with a gassy, rotten egg odor.
1. Calcium chloride causes the temperature to turn to warm.
2. The controlled experiment without calcium chloride did not have a temperature change.
3. In the overall reaction the color changed to a orange color. In the controlled experiments we could don't find what caused the color to change.
4. The temperature changed before the gas bubbles formed.
5. All experiments required a liquid for a reaction to occur.
6. Gas is the new substance formed when all chemicals are mixed in the bag. Chemicals responsible are both the solids and water.
7. An experiment that could be tested is adding different amounts of water to see if calcium chloride's physical identity change occurs.
8. A temperature change doesn't always indicate a chemical reaction because you could see a color change or a physical change.
Chemistry in a bag
1) answer: The calcium chloride and phenol red seem to be the most reason behind the chemical reactions.
2) answer: most of the time with the sodium bicarbonate the temperature was lower. But with the calcium chloride the temperature usually got warmer.
3) answer: mostly the color changed to a pink color because if the phenol red. But when the baking soda was added with the phenol red and calcium chloride and baking soda the color changed to pink then yellow then orange.
4) answer: not necessarily. Sometimes the temperature change occurs before the color change. Only by a few seconds, though.
5) answer: all of our experiments were composed with fluid of some sort. Whether it was water or phenol red. It seems to be necessary for the experiment to react correctly.
6) answer: the combination of chemicals that we used in our experiment usually created a new temperature and a new color. Not always a new smell. But throughout the observations I have concluded that a new substance is made through each experiment.
7) answer: maybe mixing the chemical with water would change it a different color.
8) answer: because if there wasn't a retain of any kind then it wouldn't change anything. Temperature is a change. So if it changes temperature then there is a retain going on.
2) answer: most of the time with the sodium bicarbonate the temperature was lower. But with the calcium chloride the temperature usually got warmer.
3) answer: mostly the color changed to a pink color because if the phenol red. But when the baking soda was added with the phenol red and calcium chloride and baking soda the color changed to pink then yellow then orange.
4) answer: not necessarily. Sometimes the temperature change occurs before the color change. Only by a few seconds, though.
5) answer: all of our experiments were composed with fluid of some sort. Whether it was water or phenol red. It seems to be necessary for the experiment to react correctly.
6) answer: the combination of chemicals that we used in our experiment usually created a new temperature and a new color. Not always a new smell. But throughout the observations I have concluded that a new substance is made through each experiment.
7) answer: maybe mixing the chemical with water would change it a different color.
8) answer: because if there wasn't a retain of any kind then it wouldn't change anything. Temperature is a change. So if it changes temperature then there is a retain going on.
we put one spoon full of baking soda and calcium chloride in one side of the bag and tied it off from the other corner with the pipette of phenol red then we shook and mixed them well. it turned yellow and it was bubbly and foamy and it was cold and the bag popped because it filled up with air and it smelled like rubbing alcohol.
1. baking soda and phenol red made it cold
2.calcium chloride and phenol red made it hot
3.orange. what made the color change was the calcium chloride and the baking soda and phenol red made it turn orange.
4.the temperature started to change right when the chemical touch the color change a little bit after that.
5. All of the experiments required a liquid for a reaction to occur in the bag.
6. Gas is the new substance formed when all chemicals are mixed in the bag. Chemicals responsible are both the solids and water.
7. An experiment that could be tested is to add different amounts of water to see if calcium chloride's looks would change.
8. A temperature isn't the only change that indicate a chemical reaction because their is also the physical change and the smell.
1. baking soda and phenol red made it cold
2.calcium chloride and phenol red made it hot
3.orange. what made the color change was the calcium chloride and the baking soda and phenol red made it turn orange.
4.the temperature started to change right when the chemical touch the color change a little bit after that.
5. All of the experiments required a liquid for a reaction to occur in the bag.
6. Gas is the new substance formed when all chemicals are mixed in the bag. Chemicals responsible are both the solids and water.
7. An experiment that could be tested is to add different amounts of water to see if calcium chloride's looks would change.
8. A temperature isn't the only change that indicate a chemical reaction because their is also the physical change and the smell.
we put one scoop of calcium chloride into the baggie with one pippett of fennel red and mixed them together by shaking the baggie. It started to get cold because of the calcium chloride. It smelled like rubbing alcohol. It was also hot pink.
Next was sodium bicarbonate and fennel red into the baggie and mixed them together by shaking the baggie together as well. The baggie turned very hot because of the sodium bicarbonate. It was also hot pink and smelled like rubbing alcohol.
Questions:
1. Calcium chloride with fennel red and sodium bicarbonate with fennel red.
2. Because calcium chloride turns hot
3. It turned hot pink an orange-yellow color. Yes, because we mixed calcium chloride/sodium bicarbonate with fennel red. The white made the red color lighter.
4. No, because they both have slower chemical reaction.
5. No, without water there was no chemical reaction.
6. sodium bicarbonate and then calcium chloride and fennel red and water.
7. We put calcium chloride in a bag with water.
8. Yes because the temp. changed, but then no because other possible chemical reactions and then such as gas bubbles.
Next was sodium bicarbonate and fennel red into the baggie and mixed them together by shaking the baggie together as well. The baggie turned very hot because of the sodium bicarbonate. It was also hot pink and smelled like rubbing alcohol.
Questions:
1. Calcium chloride with fennel red and sodium bicarbonate with fennel red.
2. Because calcium chloride turns hot
3. It turned hot pink an orange-yellow color. Yes, because we mixed calcium chloride/sodium bicarbonate with fennel red. The white made the red color lighter.
4. No, because they both have slower chemical reaction.
5. No, without water there was no chemical reaction.
6. sodium bicarbonate and then calcium chloride and fennel red and water.
7. We put calcium chloride in a bag with water.
8. Yes because the temp. changed, but then no because other possible chemical reactions and then such as gas bubbles.
Chemistry in bag.
in the experiment with sodium bicarbonate, water, and fenol red it got really cold at first and released some gas. it smells really bad. the color turned pink.
in the experiment with water, calcium chloride, and fenol red it got really hot and it smells like alcohol. the color turned pink.
in the experiment with water, calcium chloride, fenol red, and sodium bicarbonate it stayed at a neutral temparture, and had a smell similar to rubing alcohol. and the color turned orange and yellow.
1. the temparture change was contributed by the sodium bicarbonate and calcium chloride.
2. yes it got cold when it was just sodium bicarbonate, water, and fenol red. and it got hot when it was just calcuim chloride, water, and fenol red.
3. yes when all the chemicals mix together they turn orange but when its just one or the other it turns pink.
4. yes.
5. no.
6. the fenol red and water.
7. no.
in the experiment with water, calcium chloride, and fenol red it got really hot and it smells like alcohol. the color turned pink.
in the experiment with water, calcium chloride, fenol red, and sodium bicarbonate it stayed at a neutral temparture, and had a smell similar to rubing alcohol. and the color turned orange and yellow.
1. the temparture change was contributed by the sodium bicarbonate and calcium chloride.
2. yes it got cold when it was just sodium bicarbonate, water, and fenol red. and it got hot when it was just calcuim chloride, water, and fenol red.
3. yes when all the chemicals mix together they turn orange but when its just one or the other it turns pink.
4. yes.
5. no.
6. the fenol red and water.
7. no.
Bag Lab
We used calcium Chloride and baking soda in one corner of the bag...then we twisted it so it cut off from the other side which is where we put the phenol red. We shook it really well and it ended up turning yellow and it was cold to the touch. It had the smell of rubbing alcohol, and was very bubbly, and foamy.
A: the phenol red, baking soda and water made it very cold. Calcium Chloride and phenol red while mixed together the contents became very warm.
A: Yes. We had six trials all together for our individual lab. All of them were very cold, except for trial 2 which became very hot. trial 2 we had mixed the phenol red and calcium chloride, and thats how it was affected.
A: The color would change for each trial but it was just in shades of pink and/or purple. The color changed each trial, as long as we had the phenol red in it. Without it there was no color at all. We tried that to and decided that wasnt what needed to be done for the final product.4
A: Yes because that data is just as important as the gas bubbles. It helps to see things in different ways, and helps to get closer to the final product.
A: We used calcium chloride, baking soda, and water. No phenol red. It was very crumbly and didnt do much of anything at all. It just made the baking soda and calcium chloride come together, but they didnt do anything. Besides crumbling apart and staying white.
A: It continued to just turn pink/purple like. it all came together fine but it just melted together when we shook it up. Each trial we tried different mixtures of phenol red, baking soda, calcium chloride, and water. After 5 more trials we put together calcium chloride, Baking soda, and phenol red. It was the right combination. it turned yellow and was cold. It started to fill the baggy with air
A: Well for an experiment that would be logical...Would be adding more water to the contents and see if the ,(calcium chlorides'), identity changes.
A: No it doesnt always make a chemical reaction because there are more then just one type of change that could happen. Changes like the temperature change, or some sort of physical change, or even a color change could happen,
3.
Tuesday, September 27, 2011
Today's Class
Today in 2nd period Chemistry we started the class by gathering up some laptops. We logged on to gmail and Mrs. Sorensen sent us an invite to Blogger. We accepted and then it was time to work on the Chemistry in a Bag lab. We need to experiment with different variables to see what caused he reaction to happen. That was pretty much all we did in class today..
Chemistry Reactoin in a bag
In chemistry we mixed calcium chloride and sodium bicarbonate together in a bag. We had to shake it until we saw a reaction occuring. A variety of things happened in the bag, such as changing colors and temperature. At first the bag turned pink and then quickly changed to yellow. At this point it was a cold. The yellow then changed to orange and also felt warm, this was the last stage of the reaction. We tested many different chemicals to see what caused the reaction. First we tested calcium chloride and phenol red. The bag turned hot and a dark red, there was no odor. Next we tested sodium bicardonate and phenol red, it turned pink and felt cold. Then we tested the sodium bicarbonate, phenol red, and water and this gave similar results. Last we tested sodium bicarbonate, phenol red, and calcium chloride and it changed color, felt cold, then felt warm. The bag filled up with gas and was yellow.
1. Calcium chloride and phenol red made the bag hot, while sodium bicarbonate and phenol red made the bag cold.
2.Calcium chloride was hot and sodium bicarbonate made the bag cold.3.In the overall reaction it turned from a yellow then to an orange. In the controlled experiments, the phenol red with calcium chloride or sodium bicarbonate alone would have a pinkish color, but added together with the phenol red they had the yellow then orange.
4.No, it appeared sometimes one would come after or before the formation of gas bubbles, never observed at the same time.
5.We tested no experiments without liquid, it appears to be an important role in creating a reaction.
6.The fact that it changed color, temperature, and also produced a gas. The chemicals are sodium bicarbonate and calcium chloride plus the phenol red.
7.Mix it with water.
8.When a temperature change occurs, it means that something has reacted, it does not necessarily have to have color or other means of change.
Chemistry In A Bag
Procedure :
1. Gather materials needed.
2. Materials needed : Baking Soda, Calcium Chloride, Fenal Red
3. Use one spoon of Baking Soda, 2 red spoons of Calcium Chloride, and 2 pipets of Fenal Red.
Experiment :
1. Put both Baking Soda and Calcium Chloride in baggie.
2. Keep Baking Soda and Calcium Chloride twisted up.
3. Put Fenal Red in without touching the Baking Soda and Calcium Chloride.
4. Let Mix and record Results.
Results :
1. Turned Yellowish/orange
2. Had a cold feeling to the touch
3. Smelled of alcohol
Answer to Questions :
1. The Calcium Chloride and the Fenal Red had the most temperature change, it got really warm.
2.Yes, All of the experiments had a temperature change, the first and third experiments were warmish/hot and the second one was cold.
3. First experiment started to turn Yellowish/Orange, Second turned Pink, and Third it turned Dark Red.
4. Yes, Because when your shaking it and feeling for a temperature change your also watching it and seeing if the color changes.
5. It changed the same way the first experiment did so, I dont think that the water interfered with anything during the reaction.
6. There was a new substance formed from mixing the 3-4 substances together.
7. Mix the Calcium Chloride and Water together and see if there is a reaction.
8. Yes, Well in the 3 experiment that I did all the temperatures had changed in the baggies and they were not the same as every experiment but they all did change.
1. Gather materials needed.
2. Materials needed : Baking Soda, Calcium Chloride, Fenal Red
3. Use one spoon of Baking Soda, 2 red spoons of Calcium Chloride, and 2 pipets of Fenal Red.
Experiment :
1. Put both Baking Soda and Calcium Chloride in baggie.
2. Keep Baking Soda and Calcium Chloride twisted up.
3. Put Fenal Red in without touching the Baking Soda and Calcium Chloride.
4. Let Mix and record Results.
Results :
1. Turned Yellowish/orange
2. Had a cold feeling to the touch
3. Smelled of alcohol
Answer to Questions :
1. The Calcium Chloride and the Fenal Red had the most temperature change, it got really warm.
2.Yes, All of the experiments had a temperature change, the first and third experiments were warmish/hot and the second one was cold.
3. First experiment started to turn Yellowish/Orange, Second turned Pink, and Third it turned Dark Red.
4. Yes, Because when your shaking it and feeling for a temperature change your also watching it and seeing if the color changes.
5. It changed the same way the first experiment did so, I dont think that the water interfered with anything during the reaction.
6. There was a new substance formed from mixing the 3-4 substances together.
7. Mix the Calcium Chloride and Water together and see if there is a reaction.
8. Yes, Well in the 3 experiment that I did all the temperatures had changed in the baggies and they were not the same as every experiment but they all did change.
Chemistry Lab
In this lab you meed a baggie, one scoop of calcium chloride, one scoop of sodium bicarbonate, and one pipet of phenol red, and a pipet of water. The calcium chloride looked white and had tiny round balls in it. The sodium bicarbonate looked like a white powder. The phenol red was a red liquid. Take the calcium chloride and the sodium bicarbonate in one corner of the baggie, twist the corner and then put the water and the phenol red in the other corner so the liquids and solids have not touched yet. Shake the baggie so all of the contents mix together. Observations should be that the baggie got warm, the substance turned red to orange to yellow, the baggie then got cold and filled with air. after the baggie gets big open it and it smelt like gasy and eggs.
Trial observations:
Baking soda and phenol red: pink, cold, and no gas.
Calcium chloride and phenol red: orange, pink, no gas, warm, and smells.
Water and calcium chloride: warm, white, and no gas.
Water and baking soda: white, cold, and no gas.
Questions:
1. The calcium chloride caused the major temperature change from cold to warm.
2. The experiments that did not get warm were the ones without calcium chloride.
3. The color observed in the overall reaction was orange. The cause of the color change could not be found in the controlled experiments.
4. The temperature changed before the gas bubbles were formed.
5. All the experiments required liquid for a Reaction to occur.
6. Gas is the new substance formed when all chemicals are used in the experiment. Chemicals that are responsible are both solids and water.
7. Test different amounts of water with the calcium chloride to see if there is any changes.
8. A temperature change does not always indicate a chemical reaction because you could see a color change or a physical change.
Chemistry in a Bag
This video shows the reaction to 1 scoop of calcium chloride, 1 scoop of sodium bicarbonate, 1 pipette of phenol red and 1 pipette of water.
This video shows the chemical reaction to 2 scoops calcium chloride, 2 scoops sodium bicarbonate, 1 pipette of Phenol Red, 1 pipette of Water.
This video shows the chemical reaction of 1 scoop calcium chloride, 1 scoop sodium bicarbonate, 1 pipette of phenol red and NO water.
This video shows the chemical reaction of 1 scoop sodium bicarbonate, 1 pipette phenol red, 1 pipette water and NO calcium chloride.
This video shows the reaction of 1 scoop calcium chloride, 1 scoop sodium bicarbonate, 1 pipette water and NO phenol red.
This video shows the chemical reaction of 1 scoop calcium chloride, 1 pipette of phenol red, 1 pipette of water and NO sodium bicarbonate.
LAB QUESTIONS:
1. When we took out the Sodium Bicarbonate, the water & phenol red reacted with the calcium chloride. It caused the substance to get very hot, very fast. When we took out the calcium chloride, the water & phenol red reacted with the Sodium Bicarbonate. The substance became cooler.
2. Yes, when we did the actual experiment we didn't notice much of a temperature change. We now know that it was the two different temperatures balancing each other out.
3. With all the mixed substances, the contents of the bag turned into a yellow/pinkish color. When we took out the sodium bicarbonate, the contents stayed red. When we took out the calcium chloride, the contents turned a pinkish color.
4. Yes, almost immediately after we mixed the chemicals, the contents would turn color and the bag would fill up with gas.
5. We tried the mixture with out phenol red and we tried the mixture without water. When we didnt add in the water, the substance turned yellow and produced A LOT of gas. Most of the substance was turned into a gas.
6. There is a lot of evidence that a new substance was formed, one of the reasons we think this is because the bag filled up with air. A new gas was created. Also, the substance changed texture.
7. Mix it with water. Then mix it with a different liquid and compare the reactions.
8. I dont think it always means there was a chemical change. When our substance without the sodium bicarbonate got really hot, its look stayed the exact same and nothing happened except the temp change.
Baggy Experiment
In the baggy experiment we put 1 scoop of sodium bicarbonate and 1 scoop of calcium chloride into a baggy. We twisted the baggy around the powders so when we put the Phenol Red into the bag, it didn't mix. When the bag was sealed with no air in it, we untwisted it and the Phenol Red mixed with the powders. We immediately started shaking the baggy. The color started changing from pink to orange to yellow, and it was warm. There was a little smell. The baggy also started filling up with gas. We did two different test to try to figure out what was causing these reactions. First, we put a scoop of sodium bicarbonate into a new baggy and then added the Phenol Red. While shaking the bag, the substance turned pink and got cold. When it was done reacting, we wafted it and there was a faint smell to it. Next, we put a scoop of Calcium Chloride into another baggy and added the Phenol Red. This one also turned pink as we shook it, but instead of getting cold it got hot. We wafted this one, too. There was a very strong smell like rubbing alcohol. The Phenol Red is what turns the substance pink. When mixed with the Phenol Red, sodium bicarbonate got cold and Calcium Chloride got hot. Since they were all mixed together, the substances evened the temperature out so it was just warm. The smells acted the same way when mixed to where you could smell something, but it wasn't bad.
- The Calcium Chloride mixed with Phenol Red made it warmer.
- The Baking Soda mixed with the Phenol Red became cold.
- The overall reaction went from pink to orange to yellow. The controlled experiments provide evidence for the combination turning pink, but not orange and yellow.
- Yes, because the gas being created could be causing color change.
- The liquid is needed, otherwise nothing happens to the powders. There is still color, temperature, and smell change without water.
- A new chemical is produced by the evidence: color change, temperature change, and smell.
- You could just mix the Calcium Chloride with Phenol Red.
- Temperature change is caused by a chemical reaction because different chemical mixtures cause things to be hot or cold. The temperature wouldn't just randomly go from hot to cold unless it was a reaction to a new chemical being mixed into the substance.
Chemistry in a Bag
Procedure:
- 1 scoop of calcium chloride in the plastic bag
- 1 scoop of sodium bicarbonate in the plastic bag
- keep both of the dry solutions together by twisting the bag before you place the liquids
- 1 pipette of phenol red in the plastic bag
- 1 pipette of water in the plastic bag
- after all these ingredients are in the bag untwist the bag and shake the ingredients together
Observations:
- orange-yellow
- got warmer after we started shaking the ingredients together
- bag started to fill with air
- then became colder
- once the reactions were done we opened the bag and wafted, it smelled kinda gassy
Trials:
Baking soda & phenol red
- pink
- cold
Calcium & phenol red
- balls turned orange at beginning
- pink
- hot!
- smelled bad
Calcium & water
- white
- hot
- kinda smelly
Water & baking soda
- white
- cold
- no gas
Questions:
1. The Calcium chloride cause the temperature change to very hot.
2. The controlled experiments without calcuim chloride did not turn hot.
3. The color observed in the overall reaction was orange. The cause of the color change could not be found in the controlled experiment.
4. The temperature changed before the gas bubbles formed.
5. All the experiments require liquid for any reaction to occur.
6. Gas is the substance formed when all chemicals are mixed in the bag. Chemicals that are responsible are both solids and water.
7. An experiment that could be tested is adding diffrent amounts of water with calcium chloride to see if any changes occur.
8. Temperature change dosent always indicate a chemical reaction because you could see a color change or a phisyical change.
Chemistry in a Bag and Sugar density lab!
In the Chemistry in a Bag lab, we took a small ziplock bag put one scoop of Calcium chloride, small, white, powdery, spheres, and one scoop of sodium bicarbonate, more commonly know as baking powder, and shook it into a corner and twisted it off. Then we added on pipet full of water and one pipet full of Phenol red, a red liquid, into the bag. We pushed out the air and sealed the bag. Then we shook the bag, mixing the various chemicals. The chemicals became warm to the touch then began to turn cold. When the chemicals mixed they turned yellow then later it became orange. Then bubbles were made and gas was produced. filling the bag. When we opened the bag and wafted an odor was produced that smelled like alcohol. We tested some variables to see what caused the reaction. We started by testing Calcium Chloride. It had no odor. Then we tried Sodium Bicarbonate and phenol red. It made a pink powder and was slightly cooler. This also had no odor. Next we tried Sodium Bicarbonate, phenol red, and water. this became cold and liquid pink. It smelled like paint thinner. Finally, we tested Sodium Bicarbonate Calcium chloride, and phenol red. The was cold, yellow, powdery, and a gas was produced. It had an odor like alcohol. This was the closest reaction to the original one.
Questions:
Questions:
- Calcium Chloride and phenol red were very hot, whereas Calcium Chloride, Sodium Bicarbonate, and phenol red were very cold.
- Yes, calcium Chloride and phenol red were very HOT.
- Yes, in the original, it turned yellow. Calcium chloride phenol red and Sodium bicarbonate made it yellow as well.
- Yes, when gas is created, a chemical reaction is occuring which produces a temp. change.
- When the sodium bicarbonate and calcium chloride were mixed together, there was no reaction. In the abscence of water, yes. In the absence of liquid, no.
- Production of a gas. phenol red and calcium chloride.
- mix it with different liquids.
- No it doesn't. It can show that over time, a substance has lost it's kinetic energy. or in some cases, it may have gained some.
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