Inflating Balloon Experiment

See the fizzling reaction between vinegar and baking soda with this experiment, and prepare to be blown away. 

Suggested for ages 3 and up.

What you’ll need: 

  • 2 ounces of vinegar 
  • Plastic water bottle 
  • 1 tablespoon of baking soda 
  • Balloon 
  • Funnel, optional


See instructional video.

Step 1: Pour 2 ounces of vinegar into the water bottle.  

Step 2: Have someone either hold the uninflated balloon open or use a funnel to put 1 tbsp of baking soda into the balloon.  

Step 3: Secure the balloon around the top of the bottle. Be careful to keep the baking soda in the balloon for now. 

Step 4: Once the balloon is tightly around the top of the bottle, gently lift the balloon to drop the baking soda into the bottle. 

Step 5: Watch the balloon inflate! 

Inspired by Hands-On Science & Math Activities

Instructional Video:

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