GENERAL KNOWLEDGE

Detailed explanation-1: -An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.”

Detailed explanation-2: -An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.

Detailed explanation-3: -Exothermic reactions are chemical reactions that produce heat. In Section II-B of Chapter 3, we defined the heat flow q as negative when heat flows from the system to the surroundings. Thus, exothermic reactions have a negative H of reaction.

Detailed explanation-4: -Where is the exothermic heat energy coming from? The heat comes from the energy stored in the chemical bonds of the reactant molecules–which is greater than the energy stored in the chemical bonds of product molecules.