EVERYDAY SCIENCE

Detailed explanation-1: -Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.

Detailed explanation-2: -During an exotherMIC reaction, energy is constantly given off, often in the form of heat. During combustion, a substance burns as it combines with oxygen, releasing energy in the forms of heat and light. If the energy produced in an Exothermic Reaction is released as heat, it results in a rise in temperature.

Detailed explanation-3: -Endothermic reactions require energy, so energy is a reactant. Heat flows from the surroundings to the system (reaction mixture) and the energy of the system increases. In an exothermic reaction, heat is released (considered a product) and the energy of the system decreases.

Detailed explanation-4: -An exothermic reaction is a chemical reaction that releases energy by light or heat.

Detailed explanation-5: -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.