Wednesday, April 4, 2012

Part Science, Part Fun

Because things aren't interesting enough around here, we're teaching the kids how to make homemade explosions. (I know, I know. I'll probably regret this later, but it's in the name of science!)

Isaac gets a close-up look.

Grandma and Grandpa D. sent a Steve Spangler Soda Foundation kit. Basically, it drops Mentos into a two-liter bottle of soda when you pull the string. The result is a spraying fountain of soda that's pretty impressive!

Isaac, Sam, Alex and Amelia do the countdown. (Note: Helmets are optional.)

Here's the video of what happened:

Pretty cool, huh?

And here's the science lesson: The teeny tiny pits (nucleation sites for you geeks out there) all over the surface of the Mentos collect the carbon dioxide bubbles in the soda. When the Mentos hit the soda the bubbles form all over the candy and rise quickly to the surface -- up and out of the bottle in an awesome blast.

This was such a hit that I'll have to go looking for more on the science of explosions. Surely some homeschooler out there has written that curriculum for the preschool set!

© Trippin' Mama 2012


Aunt Teresa said...

Caitlin used this method for her final physics project last spring as part of her Rube Goldberg machine. Pretty amazing how much force is behind that Pepsi.

Becky Jones said...

Omg Tht Is Soooooo Kwl!!! But I Dont Get The Geeks Bit Lawl xxx

Aunt Mary said...

baking soda and vinegar......Look online to make your own volcano. We did one a week or 2 ago in about 5 minutes!