Thursday, December 6, 2012

Cornstarch FIREBALL!

Today we are discussing different ways to increase the rate of a chemical reaction.  The concept of surface area is often difficult to teach to 8th graders.  Whenever I have a difficult concept to teach, I usually resort to lighting something on fire.

Corn starch is a chemically unreactive substance...until it is dispersed into a cloud.  Then it can be ignited into a spectacular fireball.  Below are two clips of me doing just that at 300 and 600 frames per second.



300 FPS
 
 
 
600 FPS

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