What is an exothermic reaction?

Q. What is an exothermic reaction?
Answer: Reaction in which heat is released
Notes: An exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants - products + energy. Exothermic Reaction means "exo" meaning releases and "thermic" means heat.

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