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**3. Explain the behavior of magic sand.** 

Magic sand is hydrophobic which means its __non-polar__, while water molecules are __polar__, so they do not form __hydrogen bonds__. Polar and non-polar molecules can not and will not mix together. There are no __intermolecular__ forces present. Instead water just bonds with itself instead of the Magic Sand. So the Magic Sand has no other choice but to then stay together with itself also. This water repellant action is what makes the sand so much fun.

Here is a short video on Magic Sand: media type="youtube" key="fcPXga4keWQ" height="200" width="300"

Did you know you can make your own magic sand ? Well, you can, and heres another video that shows you how to do it: media type="youtube" key="1nNlOj_YB6s" height="200" width="300"

Websites Used: http://en.wikipedia.org/wiki/Mars_sand http://www.mirc.gatech.edu/education/documents/1PolarityTG.pdf

Pictures and Videos: http://www.stevespanglerscience.com/product/1331 http://www.youtube.com/watch?v=fcPXga4keWQ http://www.youtube.com/watch?v=1nNlOj_YB6s&feature=related