Chemistry in a Bag

The first thing we had to do was gather all of our items. We got one scoop of calcium choride, one scoop of sodium bicarbonate, one pipet of phenol red, and one pipet of water.

OBSERVATIONS:

Calcium chloride- solid white pebbles

Sodium Bicarbonate- white fluffy powder

Phenol Red- Red liquid

Water- was a clear liquid

Steps: On video.

Post lab questions.


1. Phenol red with the calcium chloride or water with the calcium chloride.


2. Yes phenol red and sodium bicarbonate turns cold.


3. It turned orange. And so did many of the others that we tested.


4. No. The color changes first then the gas bubbles appear and then temperature change.


5. Our group used calcium chloride and sodium bicarbonate mixed together and nothing happened. Phenol red reacted with both of the non-liquid variables.


6. All of the variables except phenol red need to be included to produce gas in this expiriment.


7. Let all of the water evaporate and see if the calcium chloride is still in the bag.


8. I don't believe it does because the temperature change could be caused by the shaking of the bag.

Chemistry 9-30-11

Today in Chemistry period 3 we finshed taking our vocabulary quizzes on quia. We also learned about properties of substances: chemical, physical, intensive, and extensive. A physical property is when you can observe it without changing it. A chemical property is when it reacts and changes. Intensive property is independant on how much of a substance is. Extensive property is dependant on how much of a substance is. Once we learned these we did an electronic poll on these properties.

Chem. Period 3 9/28/11

Today we finished working on the Cemistry in Bag lab. There is a vocab Quiz tomorrow and for all the homework people your vocab words are due!!! There is also questions on Mrs. Sorensens website that you have to post on the blog.

9/26/11 Blog

Today, we used Blogger for the first time and started writing our blog about the "Chemistry in a Bag" lab. We also started testing the variables in the "Chemistry in a Bag" lab.

Chemisty in a bag

Chemistry in a bag. During this lab we used 1 pipette of phenol red, 1 scoop of calcium chloride, 1 scoop of baking soda, and 1 pipette of water. When we started this lab we had to get a small baggy and put all the solids in one corner of the bag, and then kept them separated from the liquid. The phenol red will stain very badly. The calcium chloride is an irritant. During this lab we were required to wear safety goggles. The observations I took was that the mixture turned and orange red. The mixture became cold, also the baggy was filled with gas as we shook the baggy.

surprise in a bag

When doing surprise in a bag i was the recorder of the lab. My partner Mackenzie shook the bag to see and feel the reactions. She felt warmth and cold and we witnessed the pressure of the bag increasing as the chemicals of the bag were mixing. The chemicals that we used were calcium chloride, sodium bicarbonate (baking soda), and phenol red. The hazards of these chemicals is that phenol red can stain if it got on cloths, calcium chloride is irritant (would dry and irritate or skin). Our first test was with our two liquids, phenol red and water. When the two liquids were mixed together the only chemical reaction that occurred was the color changing to pink. Our next test was with calcium chloride and phenol red. The chemical reaction that occurred was the warmth of the bag increased and the smell that came from it was similar to rubbing alcohol. Our third test was phenol red, baking soda, and calcium chloride. The results of the test was the it got a little warm, it turned yellow, the pressure of the bag increased, and the smell was still similar to rubbing alcohol.We then tested water with calcium chloride and the results of that was the heat in the bag increased. Then we tested baking soda and water, the chemical reaction that occurred was the bag went cold. Our finally test was water, calcium chloride, and baking soda the results were the bag did get a little warm, the pressure increased, but there was no smell that came from the test.
1. The chemicals that made the temperature go up was calcium chloride mixing with either liquid.
2. There was a temperature change when me and my partner mixed baking soda with water and calcium chloride with either liquid. We discovered that when baking soda was mixed calcium chloride and phenol red that the heat didn't get as hot as when calcium chloride did with just water. We figured that it was either the two powders chemical compound caused the temperature to balance out.
3. The color change we observed was yellow and the only color change we observed with the controlled experiments was with phenol red and water mixing.
4. Yes we did notice that when the temperature increased or decreased or when the color changed we saw gas bubbles forming and we figured that when the gas was building up and the chemicals were mixing that the reactions were caused of this.
5. Baking soda with water and phenol red and calcium chloride with water and phenol red and there were no changes in temperature when water was not in the experiments.
6. When the to powders are mixed together with the liquids it creates a sort of solid liquid type substance. The chemicals that are responsible for this could be either liquid mixing with either powder substance.
7. Water mixing with calcium chloride
8. A temperature does always indicate a chemical reaction, because when the temperature increases or decreases that means the substances are reacting to each other.

Chemistry In A Bag

Observations Before Lab:
Water- Clear, Liquid
Calcium Chloride- Round balls, White
Sodium Bicarbonate- White Powder
Phenol Red- Red, Liquid

Test With All Of Them Together:
Turned Yellow, Bubbly, Produced Gas That Inflated Plastic Bag, Hot, Then Turned Cold, Smells Like Rubbing Alcohol Afterward.

Test With Individuals:
Calcium Chloride With Water- Hot
Sodium Bicarbonate With Water- Cold
Calcium Chloride With Phenol Red- Warm
Sodium Bicarbonate With Phenol Red- Pink, Cold
Phenol Red With Water- Cold

Post- Lab Questions
1.Calcium Chloride Made It Hot, Phenol Red Made It Cold
2.No, It Turned Hot And Cold In The Overall Reaction. We Had Thoses Same Results In The Controlled Experiment.
3.No, Red Turned To Yellow In The Overall Reaction. The Only Color Change In The Controlled Experiment Was Red To Pink.
4.Yes, They Are Mixed Together
5.Yes, Water Doesn't Seem To Effect The Reactions Of The Experiment.
6.The Gas That Is Created And The New Color And The New Temperature Shows That It Is A New Substance.

Chemistry in a Bag!!!

We used:



Phenol Red- stains easily, low viscosity, used 1 pipet



Baking soda- looks similar to flour, used 1 scoop



Sodium Bicarbonate- resembles dippin dots, used 1 scoop



Water- used 1 pipet


What Happened:


We mixed all of these substances together in a ziploc baggie and shook the bag. While we were shaking the bag was inflating. There were two temperature changes. As we were shaking it was getting hotter and slowly began getting colder. When the bag was totally inflated we unzipped the bag and the smell of the bag was similar to the smell of rubbing alcohol or peroxide.

1. phenol red and calcium chloride


2. yes when we mixed phenol red and calcium chloride


3. it turned red then yellow


4. when we shook the bag and when it had baking soda it made gas bubbles


5. there is no reaction without the water


6. calcium chloride phenol red and baking soda

Chemistry in a Bag

In Chemistry in a bag we placed a spoonful of Calcium Chloride, and a spoonful of Sodium Bicarbonate in a pipit full of Phenol Red, and a pipit full of water into a bag sealed with little to no air left inside. After we did this, we mixed the bag from the bottom and all of the materials combined. When all this happened one person continued to shake and the other person wrote down the observations

Materials:
1.)Calcium Chloride
2.)Sodium Bicarbonate (Baking Soda)
3.)Phenol Red
4.)Water

Observations:
It turned yellow, bubbly, and it got hotter
Then it turned to a liquid and got cold, still yellow
The bag expanded and about exploded but it didn't
It smelled like permanent marker

Warnings:
Phenol red stains clothes and won't come out.

We then tested to see what material contributed some of these senses.

First we tried out the Phenol Red and Sodium Bicarbonate. We noticed that the combination turned a bright pink. We wafted it and it smelled like a sharpie.
Then we tried the Phenol Red and the Calcium Chloride, it started to heat up and turned a shade of red. We opened it up and wafted, it smelled like a sharpie. From this we could tell that the Phenol Red is the cause of the sharpie-like smell.
We tried the Calcium Chloride and water. The water dissolved the Calcium Chloride and the liquid became cloudy. We also noticed that the temperature rised, from this we concluded that the heat came from the Calcium Chloride.
Baking Soda and water started to fizz and the water then got cloudy. From this we could tell that the Baking Soda was the cause of the fizzing in the Chemistry in a Bag.
We tried out the Baking Soda and the Calcium Chloride nothing happened.
Our last test was the Sodium Bicarbonate, Calcium Chloride and Phenol Red. Our first observation was it dissolving the Calcium Chloride and turning yellow, there was no fizzing without the water.

Post-Lab Questions
1.) The Calcium Chloride causes the heat, the Sodium Bicarbonate causes the fizzing and expanding, the Phenol Red is the cause of the smell, and the Phenol Red is also part of the color

2.) The temperature rose, but no combination ever turned colder at the end, it just stayed warm

3.) No, we combined all the chemicals and we never got a yellow color. It was either red, or bright pink.

4.) Yes, as the fizzing occured, the color turned from red to yellow.

5.) Water is needed to complete the thing, all liquids were required in order for this experiment to work out. Without the water there would not be any fizzing. Because there is nothing to react with the Baking Soda.

6.) Because there wasn't any 2 chemical combination to get the yellow coloring, we tried out the Baking Soda, Calcium Chloride and the Phenol Red and got yellow color.

9/27/11 Chemistry in a Bag

• Chemical Hazard

• the Phenol Red will stain

• waft substances DO NOT SMELL
  

Observation

• 
  
  
  observe every substance and tell the color, odor, what it looks like and so on

Procedure

• take one pipet of water
• one pipet of Phenol Red
• one scoup of Calcium Cholride
• one scoup of Sodium Bicarbonate also known as Baking Soda
• then put the solids in one corner and twist it off and then add the liquids and slowly un-twist the corner
• one person needs to shake the bag and also tells what is happening (observations) and the other person needs to write down the observations

After the combination

• it turned red, then orange, it was hot, then yellow with red spots, the bag was getting air in it, the bag was yellow, the liquid was orange, and it smelled like alcohol swabs

Questions/Answers

#1:

#2:

#3:The color went from red, to orange,to yellow with red places, to yellow on the bag, and the liquid was orange. Yes, because without the Phenol Red the mixture didn't turn yellow, if it had either Calcium Cholride or Sodium Bicarbonate, it would turn white and it would be a liquid with some pebbles

#4:

#5: We combineded Calcium Cholride, Sodium Bicarbonate, and water, then Calcium Cholride, Sodium Bicarbonate and Phenol Red. Yes...

#6:

#7:

#8:

#8: The temperature change could have occured, because of the shaking, while we were trying to combine the substances.

Chemistry in a bag!

I worked Brandon, we took one spoon full of the Calcium chloride, and one of the Sodium bicarbonate or known as baking soda. With one pipette of phenol red solution and one pipette of water and mixed it in a zip lock baggy together. We actually had to do the experiment twice because when you put the substances in the baggy your supposed to separate it until your ready to mix it together. then shake the baggy to mix. but we didn't mix it well enough the first time so it didn't produce the gas it was supposed to. So we did it all again and shook the baggy for about 5 minutes. and as we were shaking the chemicals started to react and the temperature of the baggy went from hot to cold. Then it filled with chemical gas. and the baggy popped. Now what we have to do is test what made the chemical reaction. First we tested the phenol red with the baking soda nothing happened we got a thick pink liquid. The second thing we tested was the phenol red with calcium chloride, the baggy hot really hot but there was no pressure being produced. We wafted it and it had a rubbing alcohol smell. The third thing we tested was phenol red with Calcium chloride and the baking soda the Contents turned yellow and the pressure/gas was produced. W wafted it again and has the same smell as the phenol red and calcium chloride. Then we tested the calcium chloride with water and do the same with the baking soda and water. Nothing happened to either of them there was no pressure/gas produce just with the calcium chloride the temperature changed just like it did with the phenol red. The last thing we have to test is the calcium chloride, baking soda, and water all in one baggy to see if we get the same reaction as you would when we substituted the Water for phenol red. We are going to see if awe get the same amount of pressure. After testing, we found out that the the phenol red with the calcium chloride is what makes the smell, but when you put the baking soda and calcium chloride with any liquid that's what produces the pressure/gas because what happened when we did the last test was we got the gas just no smell it bubbled a little but more than any other time but that and the smell are the only thing that changed.
1. The calcium chloride with either liquids produced temp change.
2. Yes, the temperature turned very cold. It wasn't anywhere near room temperature.
3. The phenol red with just one if the substances turned pink. But when you but both substances with the phenol red then it changed yellow.
4. No, when we put just phenol red and baking soda there was no bubbling just turned color. But when you put it with the calcium chloride the bubbling and color changed happened at the same time but because we were shaking the bag at the same time.
5. We found out that when you put the baking soda with the calcium chloride with either liquids a reaction does occur, the gas was still produced.
6. The bubbling and the smell change, I think that the phenol red and calcium chloride are the ones that make up the new substance.
7. change the liquid that the calcium chloride is mixed with.
8. i believe that a temperature change is always and indication of a chemical reaction has and is occurring.

Chemistry in a Baggy

Chemistry in a bag. we used phenol red, calcium chloride, sodium bicarbonate, and water.


the calcium chloride looks similar to dip n dots, it is white, and very clumpy. Sodium Bicarbonate is white and looks similar to flour. and phenol red is a dark red liquid substance with a very low viscosity. Then we mixed one scoop of calcium chloride, one scoop of sodium bicarbonate and one pipet of phenol red and one pipet of water. Then we allowed all the chemicals to mix, and started to Observe the observations.

Observations of test 1

• the temperature didn't change at first


• the bag started to inflate


• it turned yellow


• smelled like rubbing alcohol

Observation of test 2

We used everything but water

• Pink not doing anything


• looks like sand


• dryed out


• smells like rubbing alcohol

Observation of test 3

We used water, phenol red, calcim chloride

• Hot


• pink


• no gas production


• smell-alcohol

Observation of test 4

• we used baking soda,and calcium chloride


• it started to get cold


• it smelled like rubbing alcohol

1. i beleave that it was phenol red and calcium chloride that mixed and cause the temperature change.

2. yes, some were colder then others

3. the colors were mostly pink then changed to yellow if you did the experiment right

4. yes, because the chemicals that mixed may be causing the color and the bubbles.

5. usuall no because water doesnt do anything

6. calcium chloride and phenol red and baking soda

7. add something diffrent

8. not always because some chemicals can change but it stay the same temperature.

Chemistry In a Bag Lab

Calcium Chloride was in little white balls.



Sodium Bicarbonate was fluffy white powder.



Phenol Red was was a cold red liquid.



Water was room temperature and liquid.





First we put the calcium chloride and sodium bicarbonate on one side of the bag, while we put the phenol red and water on the other side. After sealing the bag, we mixed all four of the ingredients. What we found that happened was it got warm, the color turned yellow, and the bag expanded to the point where the bag was going to explode. After we did that, we also tested more individual controlled experiments to figure what substances caused which reactions.

• Calcium Chloride made the mixture warm.




• Sodium Bicarbonate and the Calcium Chloride mixed with any liquid produces gases to make the bag expand.




• The color change was because of the phenol red and calcium chloride.




• The smell was also caused by the phenol red and calcium chloride.

Post-Lab Questions

1. With all four of the substances combined, the mixture got warm.


2. When we tested the individual controlled experiments, we found that the calcium chloride made the temperature go up.


3. In the overall experiment, the color went from being red to yellow. The Phenol Red and the calcium chloride mixed with the sodium bicarbonate made the color change.


4. With the formation of the gas bubbles, the temperature of the mixture went up and the color changed from red to yellow.


5. The controlled experiments showed that as long as the calcium chloride was mixed with a liquid, the temperature went up. Water was not needed for this reaction.


6. The color was changed and the temperature was also changed. Also, the calcium chloride dissolved in the liquid.


7. Do a controlled experiment in which the liquid that the calcium chloride is mixed with.


8. No. It does not always mean that a chemical reaction occurred. Sometimes there is just a transfer of heat. It is just one chemical dissolving into another chemical.

chemistry in a bag

Put the Calcium Chloride and Sodium Bicarbonate on one side of the bag. Other side of the bag we put Phenol Red and water. Then mixed them and it should turn a yellow color. When you are holding the bag at first it seems like its getting warm but as you continue to shake and mix the bag the colder the feeling of the bag gets. Also the more you shake and mix whats in the bag the bigger the bag got. Some bags might pop open because of all the gases being produced and others just got really inflated. Calcium Cholride makes the bag warmer. Sodium makes the bag inflate. Water helps with the infaltion. Calcium Chloride mixed with the Phenol Red makes the smell.


1. Calcium chloride mixed with water.


2. Calcium Chloride makes it warmer.


3. The overall color was a yellow orange color. Yes.


4. No not always, the bag turned color right away and as you continued to shake and mix the chemicals the temperature changed.

Today my lab patner and I finished up our Chemistry in a Bag lab. We made of video of what we did and wrote down our results.

Chemistry, in a BAG!

Materials:



-9 sandwich bags



-phenol red




-calcium chloride (rock salt)




-sodium bicarbonate (baking soda)




-water




-safety goggles




Procedure:
PUT ON SAFETY GOGGLES-



PHENOL RED STAINS, CALCIUM CHLORIDE IS AN IRRITANT.

1. Place all four chemicals in a baggie, liquids in one corner and solids in the other, and make sure that they do not touch by pushing the baggie with your hand in between the corners.

2. Prepare to take observations.




3. Remove your hand from under the bag and begin mixing the materials.







4. Record observations.




5. Throw away baggie.




6. Place phenol red and calcium chloride in opposite corners of a new baggie and separate them as in step 1.




7. Repeat steps 2, 3, 4, and 5 with the phenol red and calcium chloride baggie.




8. Place phenol red and sodium bicarbonate in opposite corners of a new baggie and separate them as in step 1.




9. Repeat steps 2, 3, 4, and 5 with the phenol red and sodium bicarbonate baggie.




10. Place water and calcium chloride in opposite corners of a new baggie and separate them as in step 1.




11. Repeat steps 2, 3, 4, and 5 with the water and calcium chloride baggie.




12. Place water and sodium bicarbonate in opposite corners of a new baggie and separate them as in step 1.




13. Repeat steps 2, 3, 4, and 5 with the water and sodium bicarbonate baggie.




14. Place phenol red, water, and calcium chloride in opposite corners of a new baggie and separate them as in step 1.




15. Repeat steps 2, 3, 4, and 5 with the phenol red, water, and calcium chloride baggie.




16. Place phenol red, water, and sodium bicarbonate in opposite corners of a new baggie and separate them as in step 1.




17. Repeat stets 2, 3, 4, and 5 with the phenol red, water, and sodium bicarbonate baggie.




18. Place phenol red, sodium bicarbonate, and calcium chloride in opposite corners of a new baggie and separate them as in step 1.




19. Repeat steps 2, 3, 4, and 5 with the phenol red, calcium chloride, and sodium bicarbonate baggie.




20. Place water, sodium bicarbonate, and calcium chloride in opposite corners of a new baggie and separate them as in step 1.




21. Repeat steps 2, 3, 4, and 5 with the water, sodium bicarbonate, and calcium chloride baggie.

OBSERVATIONS:
All four materials:

Turned yellow, produced a gas, exothermic reaction, and later endothermic reaction

Phenol red and calcium chloride:

Turned magenta, produced heat

Phenol red and sodium bicarbonate:



Turned magenta, became a bit cold




Water and calcium chloride



Became very hot, water became almost opaque




Water and sodium bicarbonate



Became a bit cold, water became almost opaque




Phenol red, water, and calcium chloride



Became hot, dark magenta color




Phenol red, water, and sodium bicarbonate



Became a bit cold, was reddish-magenta







Phenol red, calcium chloride, and sodium bicarbonate:



Became warm, then cold, produced gas and was yellow







Water, calcium chloride, and sodium bicarbonate



Became warm, produced gas







Lab Questions:



1. Based on the results of the controlled experiments, what combination of substances seems to be responsible for the observed temperature change in the overall reaction?

Water or phenol red mixed with calcium chloride produced heat, and water or phenol red mixed with sodium bicarbonate caused an endothermic reaction.


2. Was there a temperature change observed in any of the controlled experiments that was NOT observed in the overall reaction in part A? Explain.

No, the controlled experiments became both hot and cold, and so did the overall reaction.


3. What color change was observed in the overall reaction? Do the controlled experiments provide any evidence concerning the combination of chemicals responsible for the observed color change?

It became yellow; yes, phenol red, sodium bicarbonate, and calcium chloride became yellow also.


4. Are temperature or color changes always observed at the same time as the formation of gas bubbles? Explain.

No, usually the gas bubbles appear before the temperature change, but after the color change.


5. What controlled experiments were done to evaluate if a liquid is necessary for the observed effects in part A? Does any reaction occur in the absence of water?

All of the experiments without water; yes, phenol red causes reactions with different substances without water being present.

6. What evidence suggests that a new chemical substance is produced in the overall reaction of the substances mixed in part A? What combination of chemicals may be responsible for the new substance?

The filling of the baggie with gas is a key to identifying if a new chemical is produced. Obviously, the gas wasn't compressed inside the baggie when we closed it, so the gas must have been created by the chemical reaction. Water, calcium chloride, and sodium bicarbonate created the gas. This may be because either (a) the calcium chloride cannot react with the sodium bicarbonate while in a solid state or (b) the water needs to react with both of these chemicals to produce a gas.

7. Let's assume that the chemical identity of calcium chloride is not changed when it is mixed with water. Suggest an experiment that could be done to test this hypothesis.

After mixing the calcium chloride and the water, you could let it sit out to evaporate the water, and if what remains in the dish has the same properties as calcium chloride, it proves that the water does not change the chemical identity for the calcium chloride.

8. Temperature changes are sometimes used as evidence to indicate that a chemical reaction has occured. Discuss whether a temperature change always indicates that a chemical reaction has occured.

I do not think so, because the calcium chloride mixing with the water produced heat, but no new chemicals were generated by the chemical reaction, and I don't think either of their chemical formulas changed.

*Sorry if the spacing is all messed up, this doesn't always save correctly for some reason.

Brianna's Blog 9/27/11

We have just completed the lab call "Chemistry in a bag." The first thing we did was grab the bag and added one scoop of sodium bicarbonate (baking soda) and one scoop of calcium chloride into one side of the baggie. One the other side, we filled a pipet with phenol red and put in on the other side of the baggie, not letting the two mixtures touch. We sealed the baggie and mixed the ingredients. The color turned magenta, and then a deep to bright yellow. The baggie also began to increase in temperature as the mixture was shaken. We let the bag sit and the bag filled with air and popped. The mixture smelled similar to rubbing alcohol.







To test which combinations created each reaction we tested one scoop of sodium bicarbonate and one pipet of phenol red. The experiment resulted in showing that the phenol red mixed with sodium bicarbonate did not cause the heat or the yellow color. The temperature did not change, but the phenol red was cold going into the baggie. The mixture had a gritty feeling and a reddish color.







The next mixture we tested was a pipet full of phenol red and one scoop of calcium chloride. This resulted in the heat of the experiment. The results showed that the two mixed together create a magenta color, but not the yellow color of the starting experiment.





WEe mixed one scoop of calcium chloride, one scoop of sodium bicarbonate, and one pipet of water. The mixture became warm and produced a gas that filled the baggie.





We then mixed one pipet of phenol red, one pipet of water, and calcium chloride. The mixture became hot and turned a deep magenta color.





We mixed one pipet of phenol red, one pipet of water, and one scoop of sodium bicarbonate. The mixture became cold and turned a red-magenta color.







We next tested one scoop of calcium chloride and one pipet of water. This mixture resulted in the heat of the experiment of all three mixtures. The color was a milky white and the calcium chloride didn't dissolve. The color didn't turn red nor yellow. This also didnt create the air that was prdouce in the first experiment.





We mixed one pipet of phenol red, one scoop of sodium bicarbonate, and one scoop of calcium chloride. This resulted in a warm temperature that eventually turned cold. It also produced gas and turned yellow.





POST LAB QUESTIONS





1. I can say for certain that one fator to the heat was the calcium chloride. In both experiments, the phenol red/water and the calcium chloride both produced heat. It seems as though all calcium chloride needs is a liquid to increase in temperature.





2. The phenol red mixed with sodium bicarbonate did not have a temperature increase. The mixture did become lower than room temperature after the phenol red was added, but I think the phenol red was colder that room temperature. Water mixed with sodium bicarbonate did result in a temperature decrease.








3. The color in the overall reaction changed dramatically. At first the mixture turned magenta, but after it was shaken up it turned a yellow-ish color. In the controlled experiments, the mixture not including water, resulted in the yellow color of the experiment.





4. No. For example: the phenol red and the calcium chloride mixed together created a temperature change (heat) and color change (magenta) all without gas bubbles. The first experiment did create gas bubbles though.





5. We tested both substances with water, with phenol red, and with no liquid at all. The reaction that happened with no water, resulted in the yellow color, the gas, and the heat.

6. The evidence suggests that it is a new substance because the color and the temperature. Neither the color or the temperature would've happened with out combining all of the necessary items.

7. Mix calcium chloride with a different liquid to test what the reaction is.

8. This doesn't always mean a chemical reaction has occured because the temperature of the liquid plays a part in the temperature.

Chemistry in a bag review

I worked with Emilie on this "chemistry in a bag" project. We had four ingredients: calcium chloride, sodium bicarbonate, phenol red, and water. The calcium chloride was white, beady, hard, and didn't have a smell. Sodium bicarbonate-which is better known as baking soda- was white, powdery, semi-chunky, and didn't have a smell either. The phenol red was red (of course), a liquid, and smelled horrible. Be careful, it can stain clothing. The water was... well water. We were assigned to take 1 scoop of each solid and 1 pipet of each liquid and put them all in a bag, keeping the liquid and solids separate until we closed the bag. Then I shook the bag while Emilie recorded the observations. The phenol red and water mixed together and created a pink color. The bag temperature went from room temperature to hot to cold while I was shaking the bag. Our bag started to fill up with gas, but it wasn't on the verge of exploding like some other people's bags were. Emilie and I were supposed to figure out what caused what, so we tested separate ingredients together.





We tested sodium bicarbonate, calcium chloride, and water together. This combo created a lot of gas, but didn't create anything else. We decided that baking soda, calcium chloride, and water created gas. Next, we tested sodium bicarbonate and phenol red. When mixed, it created a magenta color, it was cold, and it didn't have a smell. Then we tested the calcium chloride and phenol red. It was the same magenta shade and the sodium bicaronate and the phenol red but started as a yellow color. It was hot, and when wafted, it smelled horrible, like rubbing alcohol. We concluded that the phenol red was causing the smell and color. We decided to test for the temperatures. So we tested water and calcium chloride. This created heat, concluding that calcium chloride was in charge of it. We then tested for cold, while we were on the temperature questioning. We mixed phenol red, sodium bicarbonate, and water. It turned magenta again and created the coldness we were looking for. Therefore, sodium bicarbonate, when mixed with liquid, created coldness.





So, just to sum everything up:





Gas was caused by sodium bicarbonate, calcium chloride, and water.


Color was caused by the phenol red.


Heat was caused by calcium chloride and phenol red.


Cold was caused by sodium bicarbonate and phenol red.


Smell was caused by phenol red.





Post-lab Questions :)





1. the temperature change was caused by the calcium chloride and phenol red combining, causing heat, then sodium bicarbonate and phenol red combined and created coldness.





2. No, not particularly. When Emilie and I tested, we searched for particular categories (heat, cold, color... etc.)





3. The color started off as a magenta (or hot pink for all of you who don't know your colors), then turned orange-y yellow, then a bright yellow color. The yellow reminded me of a poisonous frog. The phenol red obviously was responsible for the color.





4. No, it wasn't observed at the same time. Sometimes we excluded the phenol red, so there was no color at all.





5. Reactions don't really occur unless there is a liquid to combine everything together.





6. The chemical changes-- like the different color, temperature, and odor.

7. You could take calcium chloride and water and mix them together to see if there's a reaction.

8. A temperature change doesn't indicates chemical change because it's something that can be reverted back to it's original state, like a physical change.

Chemistry in a Bag.

What You Need For This Lab:
Calcium Chloride
Sodium Bicarbonate
Phenol Red - (be careful, does stain)
A Sandwich Bag
Pipit
Water

Experiment 1: we mixed calcium chloride, sodium bicarbonate, and phenol red all together into a bag. We put all of the dry items into one corner and than put all the liquid items into the other corner. After you do that, you seal the bag, and shake it. as you do this you want to observe what is going on in the bag.

Experiment 2: we mixed phenol red, water, and calcium chloride together into a bag. we followed the same steps as in experiment 1.

Experiment 3: we mixed phenol red, water and sodium bicarbonate together into a bag. we followed the same steps as we did in experiment 1 and experiment 2.

Post-Lab Questions-
1) I believe that the Phenol Red and Calcium Chloride caused the heat.

2) Yes, in one experiment (Phenol Red and Sodium Bicarbonate) the bag turned cold.

3) In the overall reaction it turned yellow and than to orange. I don't really think that the controlled experiments prove anything about the color changes we got.

4) No, Our experiment didn't do that. Ours first turned colors, and the heat came.

5) We put the two non-liquid items together, and nothing happened. Yes, the Phenol Red still does things to the Sodium Bicarbonate and Calcium Chloride.

6) All of the items we used (expect Phenol Red) is needed to produce gas.

7) I would suggest adding something different to the experiment.

8) A temperature change does indicate a chemical change, because you had to put chemicals together to get that temperature change.

Chemistry In A Bag!

For this lab, we needed these supplies:
-Pipette of Phenol Red
-Pipette of Water
-Spoonful of Sodium BiCarbonate
-Spoonful of Calcium Chloride
-Ziploc Bags
-Safety Glasses

Safety Concerns:
-Phenol Red stains clothing.
-WEAR SAFETY GLASSES!!!
-Do not sniff anything, only waft.
-Do not eat anything.

Descriptions:
-Phenol red is a red liquid that can stain clothing.
-Calcium Chloride is white and in little chunks.
-Sodium bicharbonate is a white, soft powder.

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Experiment 1:
We mixed all of the necessary supplies together in a small ziploc bag. The "dry" products were put in one corner of the ziploc bag and the liquids were put in the other corner. (The video shows this better). After all the supplies were put in the bag, we shook the bag and made sure all of the supplies got mixed together. As we were doing this, we observed different physical changes, for example, color, temperature, a gas was produced, etc. A video will be posted later in the blog to show this experiment.

After Experiment 1, we did two other experiments to test which components did what physical reaction in the experiment.

Experiment 2:
We mixed phenol red, water and calcium chloride together in one bag. Following the same steps as the first experiment, we then shook the supplies together and recorded observations. Again, the video will be poster later in this blog to show exact physical changes.

Experiment 3:
We went along the same process of experiment two, but instead we put phenol red, water and sodium bicarbonate together. A video will be posted to show the physical changes.
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Videos:

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OBSERVATIONS:

Chemistry in a bag

Water- clear. liquid

Calcium Chloride- pebble like. Hard

Sodium Bicarbonate- write. powerder

Phenol Red- liquid. stain. red. low vascosity

We mixed one pipite of water with one pipite of phenol red on one side of the bag

then on the other we mixed one table spoon of calcium with sodium bicarbonate.

WARNING: phenol red will stain. Calcium chloride will burn.

As we became to shake the the red mixture from the bottom of the bag. Fizzing and thickening,

it started to turn yellow. While the pressure was building inside the bag, the powdered desolved and it became warm. The fluilds started to exaporate and feel cold. When it was as full as it was going to get, we opened up the bag and waffed it. Smelt like a sharpie.

Phenol Red+ Baking Soda-turned pink. smelt like sharpie

Phenol Red+ Calcium- heat, red, smelt like sharpie

Calcium Chloride+ Baking Soda- noting happened

Calcium Chloride+ Water- heated, cloudy liquid

Baking Soda+ Water- fizzing, cloudy water

1-calcium chloride

2- experiments without the calcium chloride did not heat up

3- orange and yellow. no

4-no. they happened at different times

5- baking soda and calcium chloride together. nothing different happens without water

6- the gas built up inside the bag. baking soda

7- don't mix it with liquids

8- doesn't allows occur. we mixed certian substances together and the had a chemical reaction without heat

Chemistry in a Bag!

first put one scoop calcium chloride in a baggie, then add one scoop of sodium bicarbonate(which is just a fancy name for baking soda! XP). Tie them in one cornor of the baggie, the put in one pipette of phenol red* and on pipette of water in. Untie the the other cornor and then start shaking the baggie! The chemical will mix together and turn YELLOW! After a minute or two the baggie will start getting hot and the liguid will turn a orange-ish red. If u do everything right, the baggie will fill up with enough gas that is produced by the chemical change that it will pop! Beware, when your describing the change that smell is a qualitative data and the change creates an odor the is a mix of presh paint and sharpy!

But what did what??

the gas is caused by the baking soda, calcium carbonate and water mixing together.

the heat and the color change was caused by the phenol red and the calcium carbonate

the cold by the baking soda and the phenol red

the smell by the phenol red!

POST LAB QUESTIONS!!!!!!
1. The combination that was responsibly for the temperature change was phenol red and calcium carbonate
2. No, except when we mixed the two chemicals from above
3. The color changed from red to yellow to red-ish orange. Yes, the same chemicals responsibly for the change in temperature are responsibly for the change in color
4. No, the bubbles are formed by a different combination of chemical
5. No reaction occurred when there was no water or liquid was present in the baggie.
6. A new chemical was made. You can tell because there was a change in color,temperature and a gas was formed, all signs of a chemical reaction
7. You could see when you mixed the two if there was a chemical reaction
8. Temperature is, because as the atoms of the chemical start reacting the build up speed causing them to collide and make heat

*phenol red stains! so be very careful!

Chemistry in a Bag Lab

Materials:


baggy
safety goggles
calcium chloride
sodium bicarbonate
water
phenol red
pipet
spoon


Observations before lab:


Calcium Chloride were little white balls and solid.

Sodium Bicarbonate (baking soda) was a powder that was white and fluffy.

Phenol Red was a red liquid that stains.

Water was watery. It is a clear liquid.

Lab:

1. Take a spoonful of calcium chloride and a spoonful of sodium chloride and put them in a bag.

2. Seal off the calcium chloride and sodium bicarbonate in a corner of the bag.

3. Put a pipet of water and a pipet of phenol red in the bag separate from the calcium chloride and sodium bicarbonate.

4. Then you seal the bag, shake, and mix them together.

Observations during:

When mixed together it turned a mix between yellow and orange. It got warm and fizzy. It turned into a liquid. The bag then expanded. After that it got cold and bubbly. Once the bag was opened it smelled like alcohol.

Testing substances:

*No need to test calcium chloride + sodium chloride because they were placed together in the bag. Same goes for phenol red + water.

1. calcium chloride + phenol red = yellow at first, then a pinkish red color and hot. calcium chloride balls stayed as balls.

2. sodium bicarbonate + phenol red = sandy and pinkish red

3. calcium chloride + water = calcium chloride dissolves, stays watery

4. water + sodium bicarbonate = cold, milky, fizzy/bubbly

5. phenol red + water + calcium chloride = hot and dark red

6. phenol red + water + sodium bicarbonate = cold and red

7. phenol red + calcium chloride + sodium bicarbonate = warm then cold, was yellow and cold

8. water + calcium chloride + sodium bicarbonate = got warm and gas was produced

Post-Lab questions:

1. The phenol red caused the color change. Calcium chloride caused the heat. The sodium bicarbonate, water, and calcium chloride produced gas.


2. In the original experiment it was hot then cold. In the individual experiments without calcium chloride, it did not get hot.


3. In most individual experiments it got red, but when they were all combined it got yellowish orange.


4. Yes, the fizzing and formation of bubbles happened as the temperature was changing and the color was changing.


5. A liquid is needed to make a change. Without water nothing dissolved but temperature and color changes did occur without water.


6. With everything together it becomes a liquid, it smells different, looks different, and feels different so it is most likely a whole new substance when they are all combined. To get the new substance for the original experiment, all the substances are needed.


7. Just mixing calcium chloride and water will test if their is a chemical reaction between them. If anything changes then their identities are changed.


8. A temperature change does mean a chemical reaction has occurred because they have combined and changed something about each other.

Chemistry in a Bag lab

Calcium Chloride is small white solids in ball form.



Sodium Bicarbonate is a fluffy white powder AKA: Baking Soda.



Phenol Red is a red liquid. WARNING: Phenol Red easily stains clothing.



Water is a clear liquid.



1. Take a spoonful of calcium chloride, a spoonful of sodium bicarbonate, a pipet full of phenol red, and another pipet with water.





2. Put the solids (calcium chloride & sodium bicarbonate) in one corner of a plastic bag and put the liquids (water & phenol red) in the other corner of the plastic bag.





3. Mix together and start shaking the bag.



When mixed together they should turn yellow and start to fizz. It starts to get warm and then turns orange and bubbly. During that it is cold. After you open the bag and waft, it smells like medical alcohol swabs.


Post-Lab Questions

1. Phenol red with Calcium Chloride or water with Calcium Chloride.

2. Yes, phenol red and Sodium bicarbonate turns cold.

3. It turned orange. Yes, many others turned different colors.

4. No, the color changes first and temperature changes last with the gas bubbles forming in the middle.

5. We used calcium chloride and sodium bicarbonate together and they did nothing. Phenol red reacted with both non-liquid variables.

6. Everything but phenol red needs to be included to produce gas in the experiment.

7. Let the water evaporate and see if the calcium chloride is still there.

8. I don't think it does because temperature change could be caused by friction from shaking it.