Problem: Sort the following reactions as either endothermic or exothermic.a. making popcorn in a microwave oven b. a burning match c. the reaction inside a chemical heat pack d. boiling water e. burning rocket fuel

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Recall that:

Exothermic reactions: lose energy and involve bonds breaking; ΔH is negative

Endothermic reactions: gain energy and involve bonds forming; ΔH is positive


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Problem Details

Sort the following reactions as either endothermic or exothermic.

a. making popcorn in a microwave oven
 b. 
a burning match
 c. 
the reaction inside a chemical heat pack
 d. 
boiling water
 e. 
burning rocket fuel