Photosynthesis is the process by which autotrophs (plants) convert light energy into chemical energy. The formula for this is: 6CO2 + 6H2O → C6H12O6 + 6O2

Which part of this formula contains reactants and which part contains products?

The reactants are 6CO2 + 6H2O and the products are C6H12O6 + 6O2.