Chemical Reactions Project

What happens when you mix yeast and hydrogen peroxide?

Graph of Experiment

When yeast and hydrogen peroxide were mixed, the temperature increased. This is an exothermic reaction because energy was released. The lowest temperature was 20.1 degrees Celsius and the highest temperature was 29.1 degrees Celsius. This is a chemical reaction because oxygen was created and bubbles formed.

Breakdown of the Reaction

In this equation, hydrogen peroxide is mixed with yeast and becomes water and oxygen gas. The Law of Conservation of Mass is demonstrated as follows:

Reactants:                                                                        Products:

4 Hydrogen                                                                       4 Hydrogen

4 Oxygen                                                                           4 Oxygen


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