How to Blow Up a Balloon with Yeast

Did you know you can blow up a balloon without the use of helium or your breath? All you need is a packet of yeast, a clean, clear plastic soda bottle, a teaspoon of sugar and some warm water to get started.

How does this experiment work?

As the yeast eats the sugar, it releases a gas called carbon dioxide. The gas fills the bottle and then inflates the balloon as more gas is created.

Click here to download a PDF of the instructions for this experiment to print and recreate at home!

Find us at Facebook.com/abc11scienceclub to share photos and videos of your balloon! Also, be sure to tune in to ABC11 Science Club with BASF every Wednesday at 4:28 PM!