Tusker Toothpaste
Question:
What will happen when hydrogen peroxide is mixed with yeast (a catalyst)?
Hypothesis:
We predict that the yeast will help remove the oxygen from the hydrogen peroxide.
When the yeast mixes with the hydrogen peroxide, it will turn the hydrogen peroxide (H2O2) into water (H2O) and oxygen gas (O2). The dish soap will cover the oxygen gas and that will make the foam.
When the yeast mixes with the hydrogen peroxide, it will turn the hydrogen peroxide (H2O2) into water (H2O) and oxygen gas (O2). The dish soap will cover the oxygen gas and that will make the foam.
Our Experiment
Materials:
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Safety ProceduresWhen you do this project, make sure you wear gloves.
Hydrogen peroxide can bleach your clothes and hair. |
Procedure:
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Special Needs:We recommend putting putting the bottle in the middle of a tray because when yeast, hydrogen peroxide, and dish soap mix, it makes a lot of foam.
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Watch us in Action:
What happened when we changed the amount of yeast?
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1 teaspoon of yeast
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1 tablespoon of yeast
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2 tablespoons of yeast
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We took a picture right after we poured in the yeast mixture. We took another picture 30 seconds after we poured in the yeast mixture.
The more yeast we used, the faster the reaction. As you can see from our pictures, when we used 2 tablespoons of yeast, the reaction started before we could finish pouring in all of the yeast mixture.
The more yeast we used, the faster the reaction. As you can see from our pictures, when we used 2 tablespoons of yeast, the reaction started before we could finish pouring in all of the yeast mixture.
The Science behind it
The yeast is a catalyst (helper) that takes the oxygen out of the hydrogen peroxide. Oxygen is clear. The dish soap covers the oxygen and makes foam to show us that the oxygen is coming out.
Conclusions
When the yeast (catalyst) and hydrogen peroxide mixed together it foamed out of the bottle very quickly and then it slowed down.
We learned that a soda bottle worked better than a Gatorade bottle. It foamed faster because the soda bottle has a more narrow opening than the Gatorade bottle. Even though the soda bottle worked better, the Gatorade bottle worked well.
We also learned that when we used more yeast (our catalyst), we saw a faster reaction with the hydrogen peroxide.
We learned that a soda bottle worked better than a Gatorade bottle. It foamed faster because the soda bottle has a more narrow opening than the Gatorade bottle. Even though the soda bottle worked better, the Gatorade bottle worked well.
We also learned that when we used more yeast (our catalyst), we saw a faster reaction with the hydrogen peroxide.
About AshleyHi I am Ashley Moon. My hobbies are soccer, lacrosse, and basketball. I chose this project because I have a lot of experience with it. My brother, Robert and his friend Vincent demonstrated Elephant Toothpaste at the 1st Hands On Science Fair.
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About Isabella
Hi my name is Isabella Del Vecchio.I like to do gymnastics and play outside. I chose this project because I thought elephant toothpaste looked like a cool, interesting and fun project to try at the Hands On Science Night.
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