CH-332
Exothermic and endothermic reactions
Chemistry · Secondary 3 · Easy · Exothermic and endothermic reactions
A student adds dilute nitric acid to solid calcium carbonate and measures the temperature change. The temperature of the mixture increases. What does this show about the reaction?
- It is endothermic because heat is absorbed.
- It is exothermic because heat is released.
- It is neutralisation because a salt is formed.
- It is neither exothermic nor endothermic.
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