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OpenStudy (anonymous):
____ 163. Which of the following reactions is endothermic? a. freezing water into ice cubes b. a plant absorbing light to undergo photosynthesis c. a chemical hot pack d. exploding fireworks
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OpenStudy (anonymous):
I'd say A, since endothermic means you're drawing heat in. A plant absorbing light...it's more of a chemical process and doesn't have as much to do with heat... I have no idea what a chemical hot pack is. Exploding fireworks are exothermic (giving out heat).
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