Name the substances that take part in a chemical reaction.

• A process in which two or more substances react to form new compounds is called a chemical reaction.
• The substance which takes part in a chemical reaction are called reactants and the substance produced after the chemical reaction are called products.
• Reactants are written on the left-hand side of the reaction and products are written on the right-hand side.

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

Therefore, the substances that take part in a chemical reaction is called reactants.