In your own words, describe the purpose of using a chemical equation.

the purpose of using a chemical equation is to know the reactants and products that occur.

reactants=starting material

products=end result

To know the substances and number of atoms and molecules involve in the chemical equation.

Explanation:

The chemical equations are the linear presentation of chemical reactions. In our day to day life, different kinds of chemical reactions occur such as rusting of iron, curdling of milk. To represent such reactions we use chemical equations, where the left-hand side components are reactants and right-hand components are products. The reactants are the substances that are combined to form the reaction and results of the product. One can write chemical equations in words or in symbols. From the chemical equation, one can know how many numbers of atoms or molecules involve in the chemical reaction.