MadSci Network: Chemistry

Subject: Instant Disposable Heat Packets . . . How do they Work?

Date: Mon Mar 9 15:14:00 1998
Posted by Brooke Yakin
Grade level: 10-12
School: Hendrick Hudson High School
City: Montrose State/Province: NY
Country: USA
Area of science: Chemistry
ID: 889478040.Ch

These are the type that can be placed in gloves or come with first aid kits.  I 
know it is an exothermic reaction, but beyond that, I do not understand the 
reaction that occurs.  What is the specific reaction?  Why is it spontaneous?  
Why does it stop?  Please help me.

Broooke Yakin

Re: Instant Disposable Heat Packets . . . How do they Work?

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