1. Act Like a scientist

2. Who am I?

3. Baggie Lab

4. Materials: Safety: Tie back long hair, & wear goggles
- zip-lock baggie
Tie back long hair, & wear goggles
- ½ tsp. sodium bicarbonate (NaHCO3)
- ½ tsp. calcium chloride (CaCl2)
- 1 mL bromothymol blue
- 3 mL distilled water

5. What to do 1. Collect your baggie 2. Make observations
3. Formulate 2 hypotheses with your group

6. Calcium chloride Sodium bicarbonate Bromothymol blue Reaction 1
Sodium bicarbonate
Bromothymol blue
Reaction 1
Reaction 2

7. What to do 4. Mix the ingredients together. a. Do not open the baggie!
5. What do you see?

8. What to do 6. Were either of your hypotheses correct?
7. How does this connect with biology?
8. Place the baggie (unopened) in the garbage.