Question

Exothermic Vs endothermic reactions (with examples)

Answer 1

Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions.
Example: C(g)+O2(g)→CO2(g)+HeatEnergy

Those chemical reactions in which energy is absorbed are called endothermic reaction.
Example: CaCO3heat→CaO+CO2