Alka Seltzer
and Balloons

InterACTion Option 1:

1. Gather your materials: Balloon, Alka Seltzer and a little bit of water.

2. Blow up your balloon several times to stretch it out.

3. Place a little bit of water in the balloon.

4. Add 1 tablet of Alka Seltzer and have an adult help you tie it as fast as possible.

5. Observe.

InterACTion Option 2:

1. Gather your materials: 2 balloons, 2 plastic bottles, some water and Alka Seltzer.

2. Blow up your balloons several times to stretch them out.

3. Fill one bottle with a little bit of water and put a balloon on top of the bottle.

4. Fill the other bottle with a little bit of water and add 1 tablet of Alka Seltzer and put a balloon on top of the bottle as quickly as possible.

5. Observe the differences of the two bottles.

InterACTions:

• What do you think will happen?

• Why do you think the balloon grows?

• What are you wondering?

• What else do you want to try with balloons or Alka Seltzer?