Chemical Reactions Unit Test

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Question
Which event is an example of an exothermic reaction?(1 point)
Responses

melting ice
melting ice

combustion
combustion

decomposition
decomposition

evaporation
evaporation
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1 answer

The correct response is combustion.

Combustion is an exothermic reaction, which means it releases energy in the form of heat and light. Melting ice, decomposition, and evaporation are endothermic processes, as they absorb energy.