Answer :
When the energy is released in the form of heat and light it is called termed as an exothermic reaction.
Any chemical reaction results in the formation or breaking of chemical bonds. Additionally, the general rule is that "heat is absorbed when chemical bonds are broken and released when chemical bonds are established."
Because molecules naturally desire to stick together, forming chemical bonds between them needs less energy than breaking them, which costs more energy and causes heat to be absorbed from the environment.
in an exothermic reaction, the reactants have a greater energy level than the products. The products are therefore more stable than the reactants.
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