Question

How to identify an exothermic reaction?

Answer 1

Answer:

release of heat is character of exothermic

Answer 2

Exothermic reaction :

The reaction in which heat is evolved is called exothermic reaction.

So, we can say that if heat is evolved in a reaction then it is exothermic reaction.

For example : C + $O_2$ → $CO_2$ + heat

$\rule{200}2$

Endothermic reaction :

The reaction in which heat energy get absorbed is called endothermic reaction.

Example : Photosynthesis