Problem: Based on their descriptions, classify these chemical changes as endothermic or exothermic.

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We’re being asked to classify each statement as exothermic or endothermic


Recall that:

Exothermic reactionslose energy and involve bonds breaking; ΔH is negative

Endothermic reactionsgain energy and involve bonds forming; ΔH is positive


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Problem Details

Based on their descriptions, classify these chemical changes as endothermic or exothermic.

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