Which event is an example of an exothermic reaction?

a
melting ice
b
combustion
c
evaporation
d
decomposition

1 answer

The correct answer is b) combustion.

Combustion is an exothermic reaction because it releases heat and light as a product of the reaction between a fuel and an oxidant, typically oxygen. In contrast, melting ice, evaporation, and decomposition generally involve the absorption of energy, making them endothermic processes.

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