How do you write a chemical equation?

  1. A chemical reaction written in the form of formula equation shows the change of reactants to products by an arrow placed between them.
  2. The reactants are written on the left side of arrow and the final substances or products are written on the right side of the arrow.
  3. The arrow head points towards the products and shows the direction of reaction.
  4. If there are more than one reactant or product involved in the reaction, they are separated with a plus (+) sign between them.