Differentiate between the reactants and products .

Chemical reaction

$\underset{\mathrm{Reactants}}{\mathrm{A}+\mathrm{B}}\to \underset{\mathrm{Products}}{\mathrm{C}+\mathrm{D}}$

For example,

$\underset{\mathrm{Silver}\mathrm{Chloride}}{2\mathrm{AgCl}\left(\mathrm{s}\right)}\stackrel{\mathrm{Sunlight}}{\to }\underset{\mathrm{Silver}}{2\mathrm{Ag}\left(\mathrm{s}\right)}+\underset{\mathrm{Chlorine}}{{\mathrm{Cl}}_2\left(\mathrm{g}\right)}$

Reactants	Products
Reactants are substances that combine to form different products.	Products are the substances that are formed after a chemical reaction.
These are written on the left side of the chemical reaction.	These are written on the right side of the chemical reaction.
For example, $\mathrm{AgCl}$ is reactant in above equation	For example, $\mathrm{Ag}\&{\mathrm{Cl}}_2$ are products in above equation.