BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Bond breaking is an endothermic process, because it requires energy. Bond forming is an exothermic process, because it releases energy. In reaction profile diagram, the energy change in a reaction, is the difference between the reactants and products.

Detailed explanation-2: -Bond-breaking is said to be endothermic because energy is consumed to create bonds and released when bonds are broken. And the process of bond formation is usually an exothermic process. The presence of bonds is due to the bonded atoms’ lower energy state than independent atoms.

Detailed explanation-3: -If you have an exothermic reaction, it would take more energy to break the bonds in the products than it would take to break the bonds in the reactants. Another way to say this is that the bond are stronger in the products in an exothermic reaction.

Detailed explanation-4: -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. Chemical reactions that absorb (or use) energy are called endothermic.