In any equation, the reactants are usually written on the left - hand side of the equation. The products are written on the left - hand side.
We can represent a chemical equation with a chemical equation which is similar with a word equation but has more information such as quantity radio and states of the substances involved.
Firstly we need to understand the meaning of ‘chemical symbol’ and ,chemical formula’.
Each element is presented by its own chemical symbol, an abbreviation. The first letter in a chemical symbol is usually a capital letter and if there is a second letter, it is a small letter.