Kid-friendly Kitchen Chemistry

It's no secret that baking and science go hand-in-hand. With this fun experiment, you'll learn how a simple fungi like yeast can really rise to the occasion. Let's head to the kitchen!

Gather these supplies:

water bottle



1 packet of instant yeast, .25 ounces

2 tablespoons sugar

mixing bowl




Follow these steps:

1. In a bowl, mix together 1 cup of warm water, the yeast, and sugar and let it sit until dissolved. Pour the mixture through a funnel and into the water bottle. 

2. Stretch a balloon over the mouth of the bottle (make sure it’s completely covered!), then a take marker and draw a line on the bottle to mark the level of your yeast mixture. 

3. After waiting for a few minutes, observe the changes. What do you notice? What happened to your balloon? Is your yeast mixture a different height? Try checking your experiment every five minutes to see if your yeast has grown or if the size of your balloon has changed.


Who knew science could be so tasty?

Did you know that yeast is actually alive? When yeast, sugar, and water are combined, the yeast “eats” the sugar. After eating the sugar, the yeast turns it into energy and releases a gas called carbon dioxide. The gas creates little air bubbles in the bread dough—a process called fermentation.Those little holes in a slice of bread are the air bubbles yeast has created!  If you'd like to learn more about the science behind yeast and fermentation, check out this link or this video


Photos taken by Anna Killian for Bravery Mag