1. Balancing Equations P + + = O + + =
GCSE/A Level Chemistry

2. P O + = + = Balancing Equations GCSE/A Level Chemistry Oxygen Hydrogen
Water
Oxygen
Hydrogen P + =
Oxygen
Hydrogen
Carbon O + =
GCSE/A Level Chemistry

3. + = Balancing Equations The mass on each side of
the equation must be equal.
Oxygen
Carbon Dioxide
Carbon + =
1 x 12 = 12g
2 x 16 = 32g
2 x 16 = 32g
1 x 12 = 12g +
= 44g 12 32
GCSE/A Level Chemistry

4. = + Balancing Equations What happens if the masses are not equal/
Then the equation needs to be balanced.
Carbon Monoxide
Oxygen
Carbon = + 2C
2 x 12 = 24g + O2
2 x 16 = 32g =
2CO
2 x 12 = 24g 24 +
2 x 16 = 32g 32
= 56g
GCSE/A Level Chemistry