A word equation uses words to represent the reactants and products in a chemical reaction. A formula equation uses chemical symbols or formulas, but does not reveal the ratios of the products and reactants. A chemical equation is a balanced formula equation.

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron(word equation)

Explanation:

1] A word equation uses words to represent the reactants and products in a chemical reaction. It can be shown by the following example -

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron (word equation)

2] A formula equation uses chemical symbols or formulas, but does not reveal the ratios of the products and reactants. It can be shown by the following example -.

  ⇒   (formula equation)

3] A chemical equation is a balanced formula equation. It can be shown by the following example -            

  ⇒   (chemical equation)

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.