How to Inflate a Balloon Using Baking Soda and Vinegar

4.0 based on 938 ratings

Updated on Oct 01, 2014


What is the project about?

Students learn about gas and chemical reactions by discovering how to inflate a balloon using baking soda and vinegar.

What are the goals?

The goal of the project is to demonstrate the power of gas procuded when of baking soda and vinegar are mixed. The goal is for the balloon to be blown up by the gas created.

What materials are required?
  • Balloon (1 per student)
  • Small bottle (cleaned glass beverage bottle will work well) (1 per student)
  • Small funnel (1 per student)
  • Baking soda (2 tablespoons per student)
  • Vinegar (4 ounces per student)
Where can the materials be found?
Most materials can be found at an all-purpose store (such as CVS).

  • What do you think will happen when baking soda and vinegar come in contact (what will be produced)?
  • What do you think will happen to the balloon attached?
  • Why does the balloon stop blowing up (why does the reaction stop)?

For the parent/student, what terms and concepts are required to better understand the project?

The terms carbon dioxide, chemical reaction, reactants, and endothermic should be reviewed.

  1. Using the funnel, add the baking soda to each balloon (two people may be needed for this; one person to hold the balloon open and the other person to put the baking soda inside of the balloon).
  2. Pour the vinegar into the bottle.
  3. Carefully fit the balloon over the bottle opening (be careful not to drop the baking soda into the vinegar yet).
  4. Once the balloon is fitted snugly on the nozzle, hold up the balloon and allow the baking soda to fall into the vinegar.
  5. Observe the chemical reaction and effect on the balloon.
  6. Record observations.

Brooke Greco graduated from UC Berkeley, and has volunteered her time with several after-school learning programs over the last several years. Brooke served as a Citizen's Schools Teacher in Redwood City, CA, where she taught a course on the rain forest. In addition, Brooke served as aÃteacher at the New Era Galapagos Foundation and taught English and conservation practices to local youth of the Galapagos Islands.

How likely are you to recommend to your friends and colleagues?

Not at all likely
Extremely likely