Chem in a bag

What did you use?

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

A-baking soda
-was a powder substance

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

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

water
-was a liquid substance


What did you do?


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



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


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


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


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


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


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

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

Post lab questions

1. Calcium Chloride with a liquid

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

3. a)Red to yellow

b)Phenol red Calcium Chloride and Sodium Bicarbonate

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

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

6. a)It has a new color and odor

b)Calcium Chloride and Phenol Red

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

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