Search for Science Fair Projects

1000 Science Fair Projects with Complete Instructions

Food Science Science Fair Project

Baking with Yeast

Baking with Yeast | Science Fair Projects | STEM Projects
Have you ever wondered how bread gets its fluffy texture? In this experiment, you'll find out how yeast helps make bread rise.


The hypothesis is that yeast produces carbon dioxide gas, which makes bread rise and gives it a fluffy texture.

Method & Materials

You will mix lukewarm water, sugar, and yeast in a plastic bag, then put it in a warm place.
You will need one large Ziploc-type freezer bag, one envelope of "rapid-rise, active, dry yeast", 1 cup lukewarm water, and 1/2 cup sugar.


After an hour, you will see that the bag has partially filled with gas, and that the liquid is full of carbon dioxide bubbles that the yeast has produced. You may even see a noticeable amount of puffiness in the bag after two hours.

Why do this project?

This science project is interesting because it shows how a tiny organism like yeast can have a big impact on the texture of bread.

Also Consider

Experiment variations to consider include using different types of yeast, different temperatures of water, and different amounts of sugar.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Share this Science Project:

Related Science Fair Project Ideas

Does Cooking Deplete Vitamin C?
Let's find out if cooking fruits and vegetables depletes their Vitamin C content!
Fast Food Nutrition
Are you curious about what's really in your fast food? Find out by conducting this experiment!
Investigating Baby Food Contamination
Let's find out what happens when baby food is left out of the fridge for different amounts of time!
Share this Science Project: