Question

What is a photochemical reaction?​

Answer 1

Answer:

A photochemical reaction is a chemical reaction triggered when light energy is absorbed by a substance's molecules.

Answer 2

Explanation:

Photochemical reaction, a chemical reaction initiated by the absorption of energy in the form of light. ... The consequence of molecules' absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules.