Question

Give one example each of a chemical change that involves evolution and absorption of heat.

Answer 1

Explanation:

Exothermic Reaction

These reactions are accompanied with absorption of heat. These reactions are accompanied with evolution of heat. Melting of solids, fusion, evaporation and vaporisation are examples of endothermic reaction. Combustion of petrol and oxidation of ammonia are examples of exothermic reaction.

Answer 2

Answer:

combustion of substance such as petroleum,diesel, kerosene and much more.

Explanation:

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