Question

Give one example of an exothermic reaction.

Answer 1

1. The reaction which is characterized by the release of energy in the form of heat or light is called an exothermic reaction.
2. For example: Matching a light using a matchstick is one example of this type of reaction where the release is in the form of both heat and light.

$$\begin{gathered} \mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right)+\mathrm{heat} \\ \left(\mathrm{Carbon}\right)\left(\mathrm{Oxygen}\right)(\mathrm{Carbon}\mathrm{dioxide}) \end{gathered}$$