Photosynthesis

2 H₂O. . . . .They say water splits
O₂   /   2H   /   2H

2H   /   2H
carbon enters leaf to join hydrogens

CO₂
. . . . . CH₂O = Sugar
. . . . . . H₂O

Ingredients to make one sugar molecule:
water = 12
H₂O   H₂O   H₂O   H₂O   H₂O   H₂O    H₂O   H₂O   H₂O   H₂O   H₂O   H₂O

carbon dioxide = 6
CO₂   CO₂   CO₂   CO₂   CO₂   CO₂

    6 CH₂O      6 O₂      6 H₂O
     sugar       oxygen      water

My saying . . . . When you see it, you are getting it !