Balloon Blow Up **UPDATED 9/16/2020**

Good afternoon scientists! We just blow up a balloon using science. Help your little scientist to complete this investigation today.


Balloon Blow Up (5)


Baking Soda


Clean Empty Plastic Bottle

1/2 Tsp Measuring Spoon

Measuring Cup (1/4 cup)


Safety Goggles


  1. Make sure to wear your safety goggles. Place the funnel into the balloon opening, measure out 1/2 teaspoon of baking soda. Pour the baking soda into the funnel. Remove the balloon from the funnel and gently set it aside.Balloon Blow Up (8)
  2. Place the funnel into the top of the empty bottle. Measure out 1/4 cup of vinegar and add to the bottle. Remove the funnel and stretch the balloon over the top of your bottle.Balloon Blow Up (16)
  3. Pour the baking soda from the balloon into the bottle.

    Watch your balloon blow up. Make sure to ask your little scientist why the balloon blew up. If they are not sure walk them through each piece separately and test: Did the bottle blow up the balloon? Did the baking soda blow up the balloon? Did the vinegar blow up the balloon? Did the baking soda with vinegar blow up the balloon?

Extended Learning: *Be prepared in case it spills over* let your little scientist experiment with different amount of baking soda and vinegar to see if it affects the balloon.Balloon Blow Up (31)

Talking Points

In this investigation we experimented with vinegar and baking soda to fill up a balloon. Vinegar is an acid, it has a pH of less then 7. Baking soda is a base, it has a pH higher then 7. When you combined an acid and base together it causes a chemical reaction. In our investigation the chemical reaction was when the vinegar and baking soda started to bubble and fizz. The chemical reaction we created had carbon dioxide gas released and this is what blew up our balloon. Carbon Dioxide is a type of gas, we breathe in oxygen and breathe out carbon dioxide.

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