WorksheetsBalancing Chemical Equations Exam
Total questions: 10
Worksheet time: 3hrs 30mins
Which equation is correctly balanced? You may have to work this out on scratch paper. K2O + H2O → KOH
It's already balanced
K2O + H2O → 2KOH
2K2O + H2O → 4KOH
K2O + 2H2O → 4KOH
Which equation is correctly balanced? You may have to work this out on scratch paper. H2O2 → H2O + O2
2H2O2 → H2O + 2O2
H2O2 → H2O + 2O2
2H2O2 → 2H2O + O2
It's already balanced
Which equation is correctly balanced? You may have to work this out on scratch paper. SiO2 + HF → SiF4 + H2O
2SiO2 + 2HF → 2SiF4 + H2O
2SiO2 + HF → 2SiF4 + H2O
It's already balanced
SiO2 + 4HF → SiF4 + 2H2O
Which equation is correctly balanced? You may have to work this out on scratch paper. KClO3 → KCl + O2
2KClO3 → 2KCl + 3O2
It's already balanced
2KClO3 → KCl + 3O2
2KClO3 → 3KCl + 2O2
Which equation is correctly balanced? You may have to work this out on scratch paper. Sb + O2 → Sb4O6
8Sb + 3O2 → 2Sb4O6
4Sb + 6O2 → 2Sb4O6
4Sb + 3O2 → Sb4O6
It's already balanced
Which equation is correctly balanced? You may have to work this out on scratch paper. SO2 + Li2Se → SSe2 + Li2O
2SO2 + Li2Se → SSe2 + 2Li2O
2SO2 + Li2Se → 2SSe2 + Li2O
It's already balanced
SO2 + 2Li2Se → SSe2 + 2Li2O
Which equation is correctly balanced? You may have to work this out on scratch paper. Al + HCl → H2 + AlCl3
2Al + 6HCl → 3H2 + 2AlCl3
It's already balanced
6Al + 2HCl → 3H2 + 2AlCl3
3Al + 2HCl → 6H2 + 2AlCl3
Which equation is correctly balanced? You may have to work this out on scratch paper. Na3PO4 + CaCl2 → NaCl + Ca3(PO4)2
It's already balanced
6Na3PO4 + CaCl2 → 2NaCl + 3Ca3(PO4)2
2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2
3Na3PO4 + 6CaCl2 → NaCl + 2Ca3(PO4)2
Which equation is correctly balanced? You may have to work this out on scratch paper. CH4 + O2 → CO2 + H2O
CH4 + 2O2 → CO2 + 2H2O
It's already balanced
2CH4 + O2 → 2CO2 + H2O
CH4 + 2O2 → 2CO2 + H2O
Which equation is correctly balanced? You may have to work this out on scratch paper. Pb(OH)2 + HCl → H2O + PbCl2
It's already balanced
2Pb(OH)2 + HCl → H2O + 2PbCl2
2Pb(OH)2 + 2HCl → H2O + 2PbCl2
Pb(OH)2 + 2HCl → 2H2O + PbCl2
