Can You Take The Challenge On This Chemistry Quiz
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.
- 1.
Choose the correctly balanced chemical equation from the list.- A.
CH4 + 2O2 → CO2 + H2O
- B.
CH4 + 3O2 → CO2 + 2 H2O
- C.
CH4 + 2O2 → CO2 + 2 H2O
- D.
CH4 + 2O2 → CO2 + 3 H2O
- 2.
Choose the correctly balanced chemical equation from the list.
- A.
Al + 6HCl → 2AlCl3 + 3H2
- B.
2Al + 6HCl → 2AlCl3 + 3H2
- C.
Al + HCl → AlCl3 + H2
- D.
2Al + HCl → AlCl3 + 3H2
- 3.
Choose the correctly balanced chemical equation from the list.
- A.
C2H6 + 31/2O2 → 2CO2 + 3H2O
- B.
C2H6 + 7O2 → 4CO2 + 5H2O
- C.
C2H6 + 3O2 → 2CO2 + 3H2O
- D.
C2H6 + 31/2O2 → CO2 + 3H2O
- 4.
Choose the correctly balanced chemical equation from the list.
- A.
2NaBr + Cl2 → 2NaCl + Br2
- B.
NaBr + Cl2 → NaCl + Br2
- C.
2NaBr + Cl2 → NaCl + Br2
- D.
3NaBr + Cl2 → 3NaCl + Br2
- 5.
Choose the correctly balanced chemical equation from the list.
- A.
2H2 SO4 + Pb(OH)4 → Pb(SO4)2 + 4H2O
- B.
H2 SO4 + Pb(OH)4 → Pb(SO4)2 + 4H2O
- C.
2H2 SO4 + Pb(OH)4 → PbSO4 + 4H2O
- D.
2H2 SO4 + Pb(OH)4 → Pb(SO4)2 + H2O
- 6.
Choose the correctly balanced chemical equation from the list.
- A.
Mg(OH)2 + 2HCl → MgCl2 + H2O
- B.
Mg(OH)2 + 2HCl → MgCl2 + 2H2O
- C.
Mg(OH)2 + HCl → MgCl2 + H2O
- D.
MgOH + 2HCl → MgCl2 + 2H2O
- 7.
Choose the correctly balanced chemical equation from the list.
- A.
TiCl4 + H2O → TiO + 4HCl
- B.
TiCl4 + 3H2 → TiO2 + 5HCl
- C.
TiCl4 + H2 → TiO2 + HCl
- D.
TiCl4 +2H2O → TiO2 + 4HCl
- 8.
Choose the correctly balanced chemical equation from the list.
- A.
3Na3PO4 + 3HCl → 3NaCl + H3PO4
- B.
Na3PO4 + 2HCl → 3NaCl + H3PO4
- C.
Na3PO4 + HCl → NaCl + H3PO4
- D.
Na3PO4 + 3HCl → 3NaCl + H3PO4
- 9.
Choose the correctly balanced chemical equation from the list.
- A.
PCl5 + H2O → H3PO4 + HCl
- B.
PCl5 + 4H2O → H3PO4 + HCl
- C.
PCl5 + 4H2O → H3PO4 + 5HCl
- D.
PCl5 + 4H2O → H3PO4 + 5HC
- 10.
Choose the correctly balanced chemical equation from the list.
- A.
FeO3 + 3CO → Fe + 3CO2
- B.
2FeO3 + 2CO → Fe + 3CO2
- C.
FeO3 + 3CO → Fe + 2CO2
- D.
FeO3+ 3CO → Fe + CO2
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