Why do some molecules separate under extreme heat?

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LogicalAcid
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Why does heat cause certain things to break into their basic elements?
 
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Because the average kinetic energy of the individual atoms in the molecule becomes larger than the binding energy of the chemical bonds holding them together.
 
alxm said:
Because the average kinetic energy of the individual atoms in the molecule becomes larger than the binding energy of the chemical bonds holding them together.

I understand, thank you.