In chemistry, equations help us to know about what is happening in a chemical reaction. The starting materials are known as the reactants (sometimes called reagents), and the new materials are called the products. Scientists use balanced symbol equations to describe chemical reactions. Can you rightly balance these equations? Take this quiz to find out.
CH4 + 2O2 → CO2 + H2O
CH4 + 3O2 → CO2 + 2 H2O
CH4 + 2O2 → CO2 + 2 H2O
CH4 + 2O2 → CO2 + 3 H2O
Al + 6HCl → 2AlCl3 + 3H2
2Al + 6HCl → 2AlCl3 + 3H2
Al + HCl → AlCl3 + H2
2Al + HCl → AlCl3 + 3H2
C2H6 + 31/2O2 → 2CO2 + 3H2O
C2H6 + 7O2 → 4CO2 + 5H2O
C2H6 + 3O2 → 2CO2 + 3H2O
C2H6 + 31/2O2 → CO2 + 3H2O
2NaBr + Cl2 → 2NaCl + Br2
NaBr + Cl2 → NaCl + Br2
2NaBr + Cl2 → NaCl + Br2
3NaBr + Cl2 → 3NaCl + Br2
2H2 SO4 + Pb(OH)4 → Pb(SO4)2 + 4H2O
H2 SO4 + Pb(OH)4 → Pb(SO4)2 + 4H2O
2H2 SO4 + Pb(OH)4 → PbSO4 + 4H2O
2H2 SO4 + Pb(OH)4 → Pb(SO4)2 + H2O
Mg(OH)2 + 2HCl → MgCl2 + H2O
Mg(OH)2 + 2HCl → MgCl2 + 2H2O
Mg(OH)2 + HCl → MgCl2 + H2O
MgOH + 2HCl → MgCl2 + 2H2O
TiCl4 + H2O → TiO + 4HCl
TiCl4 + 3H2 → TiO2 + 5HCl
TiCl4 + H2 → TiO2 + HCl
TiCl4 +2H2O → TiO2 + 4HCl
3Na3PO4 + 3HCl → 3NaCl + H3PO4
Na3PO4 + 2HCl → 3NaCl + H3PO4
Na3PO4 + HCl → NaCl + H3PO4
Na3PO4 + 3HCl → 3NaCl + H3PO4
PCl5 + H2O → H3PO4 + HCl
PCl5 + 4H2O → H3PO4 + HCl
PCl5 + 4H2O → H3PO4 + 5HCl
PCl5 + 4H2O → H3PO4 + 5HC
FeO3 + 3CO → Fe + 3CO2
2FeO3 + 2CO → Fe + 3CO2
FeO3 + 3CO → Fe + 2CO2
FeO3+ 3CO → Fe + CO2
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