Reactants:

* Carbon dioxide (CO2): Taken in from the atmosphere.

* Water (H2O): Absorbed from the soil through the roots.

* Light energy: From the sun.

Products:

* Glucose (C6H12O6): A sugar that is the primary energy source for the plant.

* Oxygen (O2): Released into the atmosphere as a byproduct.

The overall chemical equation for photosynthesis is:

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