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 Printable Version for your convenience!
Title - Mixing soap with water and pepper
By - Jena
Primary Subject - Science
Grade Level - any
Note from LessonPlansPage.com: you really have to try this! It is a really awesome demonstration that would be great as a magic trick or as an idea for a creative writing assignment involving magic.
Materials: toothpick, bowl, liquid dishwashing soap, pepper, and water
Procedure:
1. Fill the bowl with water
2. Sprinkle about a teaspoon of pepper above the water
3. Dip the tip of the toothpick in the liquid soap
4. Place the tip of the toothpick with the soap side into the water.
5. Watch as the pepper dramatically backs away from the toothpick
Note from LessonPlansPage.com: if you have tried it, then read on for "the secret."
The actual science happens because the soap breaks the surface tension of the water, like popping a balloon. It is the water that moves, not the pepper that is floating on it.
E-Mail Jena !
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