Balancing Chemical Equations

Front

Law of Conservation of Mass:

Back

Matter cannot be gained or lost in a chemical reaction.

Front

Left part of a chemical equation: 2H₂ + O₂ → 2H₂O

Back

Reactants

Front

Right part of a chemical equation: 2H₂ + O₂ → 2H₂O

Back

Products

Front

Total atoms in 5Na₃PO₄

Back

40

Front

Mn atoms in 3Cr(MnO₄)₆

Back

18

Front

Little number after an element in a chemical equation (e.g., H₂)

Back

Subscript

Front

Equation: Al + O₂ → 2Al₂O₃

Back

No!

Front

Elements in C6H12O6

Back

3

Front

H₂O: Element or Compound?

Back

Compound

Front

O₂: Element or Compound?

Back

Element