Mouse Toothpaste
Overview
During an exothermic reaction, HEAT is created during the reaction.
See what happens when hydrogen peroxide is helped along its chemical reaction journey by yeast to produce some big foam fun.
Chemicals
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50 mL warm water
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100 mL 3% hydrogen peroxide
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Packet of active yeast
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Liquid dishwashing detergent
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Food coloring (optional)
*Note: These chemicals can be purchased locally at stores such as Walmart/Target.
Materials
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Glass beaker
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Erlenmeyer flask
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Stirring rod
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Small plastic beaker
Procedure
The Science Behind the Reaction
This exothermic reaction results from a breakdown of the hydrogen peroxide into oxygen and hydrogen. The yeast speeds up the chemical reaction, and well, the soap is just there to capture those oxygen molecules and make a cool foam. The resulting chemical in the Erlenmeyer flask is hot as breakdown of the hydrogen peroxide is an exothermic (heat producing) chemical reaction.
Keep Experimenting
For an even bigger explosion, purchase "20-volume hydrogen peroxide" from the beauty store (or on Amazon). Complete the same experiment above, replacing the 3% hydrogen peroxide with the 20-volum hydrogen peroxide.