What an equation says
The formulas of the reactants on the left, those of the products on the right, an arrow between. In front of each formula, a coefficient gives the number of molecules.
9 min
Balancing a chemical equation
The one rule — change coefficients, never subscripts — and a step-by-step method for balancing without guesswork.
The essentials
2
The balancing rule
Members only
3
What you are allowed to change
Members only
4
Physical states
Members only