Balloon fizz-inflator experiment

Balloon fizz-inflator experiment

Inflate a balloon with simple vinegar and baking soda and amaze your friends and family with this fun and easy kids' science experiment. The balloon fizz-inflator is a great science project to teach kids about carbon dioxide. Watch our video to show you how to do it.

What you need:

  • Small plastic bottle
  • Small funnel
  • 1/2 cup vinegar
  • Small balloon
  • Bicarb or baking soda
  • Teaspoon

Number of players:


Watch the below video to see how to do the balloon fizz-inflator experiment.


Take the uninflated balloon and stretch it out a few times with your hands.

Place the funnel in the balloon opening and pour in enough baking soda to fill it halfway. Remove the funnel.

Pour the vinegar slowly into the bottle.

Carefully pull the opening of the balloon over the opening of the bottle. Try not to let any baking soda fall into the bottle.

Lift the balloon up so that the baking soda falls through the opening into the bottle and mixes with the vinegar.

The combination of the baking soda and the vinegar creates a gas called carbon dioxide. The gas expands, filling the bottle before moving into the balloon and inflating it.

Your balloon fizz-inflator is now operational.

  • Thanks to our sister company Kidspot Australia for creating the instructional video

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