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.