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Project title Soap and surface tensionScience project video
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Ever see water striders (A type of insect) travel across the surface of pond water? Have you ever seen what happens when you add oil to water? Both examples demonstrate the concept of surface tension, a condition where the molecules of a substance are so closely attracted to each other that they form a barrier. The clinging water molecules form a barrier strong enough to support both the water skater and the oil. In this science fair project, you will observe how soap affects water tension. 

Instructions preview
* Fill three quarters of the jar with water. * Pour a small amount of vegetable oil into the jar, just enough to raise the fluid level of the jar but allowing enough space to prevent the jar from over flowing. * Observe how the oil and water remain separate from each other. * Add a small amount of liquid soap, just enough to cover the liquid surface. * Observe what happens to the oil and water. .....
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