Question

Why there is a absorption of energy in certain chemical reaction and release of energy in other

reactions. Explain giving one example to each. ​

Answer 1

Explanation:

If reactant molecules in a particular reaction have more energy than the product molecules, then energy is released. And this type of reaction called an exothermic reaction.

If the product molecules have more energy than the reactants, then the reaction absorbs energy from the surroundings. And this type of reaction is an endothermic reaction .

Answer 2

Energy is used to break bonds in reactants, and energy is released when new bonds form in products. ... In other chemical reactions, it takes more energy to break bonds in reactants than is released when bonds form in products. These reactions, called endothermic reactions, absorb energy.