Magic Inflating Balloons
How we did it:
- balloons - small to medium sized
- plastic bottle - empty
- funnel (2)
- baking soda
Gather your materials!
Use one of your funnels to pour vinegar into the bottle. Fill it about 1/3 full.
Use your other funnel to pour baking soda into the balloon. Fill it about 1/2 full. A grownup can help with this part if it's tricky for the kids.
Stretch the opening of the balloon over the opening of the bottle. While you do this, pinch off the balloon opening so that no baking soda escapes into the bottle!
Lift the balloon up, allowing the baking soda to pour into the bottle. This causes a carbon dioxide gas reaction that makes the balloon inflate. How cool is it to watch the balloon expand?
After the balloon is fully inflated, pull the balloon off and discard it (as balloons are a choking hazard).