Water and Bubble

Topics: Water, Surface tension, Soap Pages: 3 (705 words) Published: December 2, 2012
Everybody loves bubbles! But what makes bubbles form, and float up in the air until they pop? A soap bubble
The secret to a good bubble is something called surface tension, an invisible bond that holds water molecules together. Water is a polar molecule, so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together, creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually, the surface tension of water is too strong to make a bubble. You can try yourself to blow a bubble with plain old water, it just won't work! A good bubble solution has a detergent added to it to relax the surface tension of the water, allowing it to have more elastic, stretchy properties. Now it can act more like the skin of a balloon, stretching out nice and thin, trapping air inside of the bubble like a liquid balloon.

II. Review of Related
Making your own bubble solution is fun, but sometimes the bubbles don't seem to work as well as the solutions you buy in the store. In this experiment you can test if adding corn syrup or glycerin to your bubble solution will make it just as good as the stuff you can buy. This experiment will have you blowing bubbles! Objective

In this experiment you will test if adding glycerin or corn syrup will improve a mixture of bubble solution. Credits
Sara Agee, Ph.D., Science Buddies
Dawn® is a registered trademark of Procter & Gamble. All rights reserved. What do you need to make a good bubble solution at home? The basic ingredients are water and detergent. In this experiment, you will add glycerin or corn syrup to see if they can help you make better bubbles. Which solution will make the biggest bubbles? Which bubbles will last the longest?

Terms and Concepts
To do this type of experiment you should know what the following terms mean. Have an adult help...
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