Here's a breakdown:

* Light energy from the sun is absorbed by chlorophyll, a pigment found in plants.

* This light energy is used to convert carbon dioxide (CO2) and water (H2O) into glucose (C6H12O6), a sugar that stores chemical energy, and oxygen (O2).

The overall equation for photosynthesis is:

6CO2 + 6H2O + light energy → C6H12O6 + 6O2

So, in essence, plants use light energy to power the chemical reaction that creates glucose, a form of chemical energy they can use for growth and other processes.