Question

Difference between exothermic and endothermic reactions

Answer 1

Exothermic: in these reactions energy is given out thus making reaction hot
Endothermic: in these reaction energy is absorbed

Answer 2

Exothermic Reactions :

These are those reactions in which heat is evolved during the reaction.

For example : C (s) + O2 (g)==>CO2 (g) + Heat

Endothermic Reactions :

These are those reactions in which heat is absorbed during the reaction.

For example : N2 (g) + O2 (g) + Heat ==> 2 NO (g)