Self Inflating Balloon


  • Vinegar
  • Small bottle
  • Baking soda
  • balloon


Put two fingers of vinegar in the bottle. Place a teaspoon baking soda in the balloon. Fasten the balloon to the mouth of the bottle and turn the balloon over. Watch the balloon inflate!!


When baking soda (carbonate) comes into contact with vinegar (acid) they react and produce carbon dioxide gas that inflates the balloon.