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Maker Monday: Blow-up Balloon

maker monday
Sally Quinn
June04/ 2018

Playing outdoors is educational, too, when the play includes interactive STEM activities, like this week’s Maker Monday experiment, a Blow-up Balloon.

The science lesson comes from a mixture of baking soda and vinegar, which creates a bubbling chemical reaction that results in carbon dioxide. The gas expands and blows up the balloon all by itself.

Lucky that the main ingredients are so inexpensive because kids will want to repeat this experiment again and again.

For more fun, draw a silly face on the balloon before beginning and watch it grow!

maker monday


Empty water bottle

Baking soda

White vinegar



Measuring cup


maker monday

Pour 1/2 cup vinegar into the empty water bottle and set aside.

maker monday

Attach the empty balloon to the bottom of the funnel. Pour in 2 tablespoons of baking soda. Stretch the balloon onto the water bottle, keeping the baking soda away from the opening.

maker monday

Once you’re all set, lift the balloon up, allowing the baking soda to drop down into the vinegar.

maker monday

Watch the bubbling as the gas expands and blows up the balloon. Let the giggling begin!

maker monday

For more Maker Monday projects and other fun stuff for kids, visit the Kidsburgh Activities page.

Sally Quinn

Sally Quinn is an award-winning writer and editor who has been covering her favorite city for more than 30 years. She appreciates all that Pittsburgh offers families and has a blast guiding her 10 grandkids to new discoveries. Sally welcomes your comments and story ideas for Kidsburgh.

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