Description : What is the photosynthesis reaction?
Last Answer : Carbon Dioxide + Water --> Glucose + Oxygen CO2 + H2O --> C6H12O6 + O2 Balancing the equation, it becomes: 6CO2 + 6H2O --> C6H12O6 + 6O2 Note that the reactions also require light and energy ( ... is the one you should write during exams, unless they ask you otherwise (which would be very odd).