Question

What does one mean by exothermic and
endothermic reactions 2 Give examples​

Answer 1

Answer:

A reaction which releases heat is called exothermic reaction

A reaction which absorbs heat or simply don't releases heat are known as endothermic reactions

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Answer 2

Explanation:

Exothermic Reaction: A chemical reaction in which heat is given out is known as exothermic reaction. For example. Endothermic Reaction: A chemical reaction in which heat energy is absorbed is known as endothermic reaction. For example.

The chemical reactions release energy in the form of heat, light, or sound, are called exothermic reactions. An exothermic reaction occurs when the temperature of a system increases due to the evolution of heat. This heat is released into the surroundings, resulting in an overall negative quantity for the heat of reaction.An example of an exothermic reaction is the mixture of sodium and chlorine to yield table salt. This reaction produces 411kJ of energy for each mole of salt that is produced: