How to Blow Up a Balloon with Yeast

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BASF shows you how to blow up a balloon using yeast (WTVD)

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!
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