12 atoms of carbon [C] 6 atoms of carbon [C] 3 atoms of carbon [C] 2 atoms of carbon [C]
I gave my students this multiple choice question: If a chemical reaction such as photosynthesis begins with 6 atoms of carbon [C], how many atoms of carbon [C] should be in the products?

Only one answer is correct among these 4 choices:
- 12 atoms of carbon [C]
- 6 atoms of carbon [C]
- 3 atoms of carbon [C]
- 2 atoms of carbon [C]

Could you tell me which one is correct?

6 atoms of carbon [C]