Give an example of a photochemical reaction with a balanced equation?
Chemical reactions which take place in the presence of light are called photochemical reactions.
Example:
Photosynthesis is a chemical reaction in which food is prepared by green plants.
Light is necessary for the reaction to take place.
Photosynthesis is a photochemical reaction in which the leaves of green plants prepare glucose and oxygen from carbon dioxide and water in the presence of chlorophyll and sunlight.