Balloon Experiment

Materials :

  • Balloon
  • clean empty bottle
  • vinegar (or lemon juice)
  • Baking Powder
  • spoon

Balloon Experiment :

Brainstorm ways to blow up a balloon (e.g. blow air into the balloon, fill it with helium, etc.) All these ideas are ways to use a GAS to fill up a balloon.

Using an empty bottle, vinegar and baking soda think of ways to use these new materials to blow up the balloon. Predict what will happen when vinegar and baking soda are combined in the bottle.

  • Stretch the balloon to make it easy to inflate.
  • Pour 15ml of vinegar into the bottle.
  • Pour 2 teaspoons of baking soda into the balloon.
  • Carefully fit the balloon over the mouth of the bottle without letting any baking soda fall into the bottle.
  • After the balloon is completely over the mouth of the bottle, let the baking soda fall into the bottle.
  • Observe the balloon expand!

When baking soda and vinegar (or lemon) are mixed, they form a GAS (carbon dioxide) that rises up into the balloon and inflates it.

3 Comments on Balloon Experiment

  1. parist
    October 26, 2012 at 3:07 pm (6 years ago)

    Hi Mrs Ryan
    The balloon task looks very fun! But when we did it as 3/4 it didn’t quite work out like we thought it would.But we have to remember not every scientist has made an experiment and worked straight away so maybe we can try it again but with more vineiger and cooking soda.

    • rryan
      October 26, 2012 at 6:12 pm (6 years ago)

      I agree Paris. I also thought the experiment looked like a lot of fun. Would you like to try it again?

      • luca
        November 21, 2012 at 1:32 pm (6 years ago)



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