Question

If the number of atoms of each element on both sides of a chemical equation is equal, then the equation is called a _________ chemical equation.

Answer 1

• A chemical reaction represents a chemical change from one or more substances to a new substance.
• A chemical equation is said to be balanced if the number of atoms of each element on the left-hand side is equal to the number of atoms present on the right-hand side.
• In order to balance a chemical equation, it is required to know what are reactants that are taking part in a chemical reaction and what are products will be formed.
• For example - ${\mathrm{H}}_2+{\mathrm{Cl}}_2\to 2\mathrm{HCl}$ is a balanced chemical equation because -

Elements	Number of atoms on reactant side	Number of atoms on product side
H	2	2
Cl	2	2

Hence, If the number of atoms of each element on both sides of a chemical equation is equal, then the equation is called a balanced chemical equation.