Description of an exothermic reaction?

lighting a candle, An initial input of energy causes oxygen and wax react to produce carbon dioxide, water, and heat.

Explanation:

During an exothermic reaction, energy is constantly given off, often in the form of heat, combustion is the best example of this

An exothermic reaction is a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products.