1. Chemical Equations
Test Review

2. 2. Label the parts. Labeling of equation
Fe(s) + CuSO4(aq) → Fe2(So4)3(aq) + Cu(s)
yields
products
reactants

3. 3. Classify the reaction (a) 2NaCl + Pb(NO3)2 → PBCL2 + 2Na(NO3)
Double Replacement
(b) H2 + Cl2 → 2HCl
Synthesis
(c) C2H8 + 4O2 →2CO2 + 4H2O
Combustion
(d) 2Li + 2H2O → 2LiOH + H2
Single Replacement
(e) 2KNO3(s) → 2KNO2(s) + O2(g)
Decomposition

4. 4. Add coefficients to balance the equations 3 2 1
(a) ____Hf + ____N2 → ____Hf3N4 1 1 1 1
(b) ____Mg + ____H2 SO4 → ____ MgSO4 + ____H2 2 7 4 6
(c) ____C2H6 + ____ O2 → ____ CO2 + ____ H2O 1 2 1 2
(d) ____Pb(NO3)2 + ____NaI → ____PbI2 + ____NaNO3 2 2 4 1
(e) ____Pb(NO3)2 → ____PbO + ____NO2 + ____O2

5. KCl + AgNO3 → KNO3 + AgCl Write balanced chemical equations
for each word equations
(a) potassium chloride + silver nitrate → potassium nitrate+ silver chloride
KCl + AgNO3 → KNO3 + AgCl

6. Al(OH)3 + 3NaNO3 → Al(NO3)3 + 3NaOH
Write balanced
chemical equations
for each word equations
(b) aluminum hydroxide + sodium nitrate → aluminum nitrate + sodium hydroxide
Al(OH)3 + 3NaNO3 → Al(NO3)3 + 3NaOH

7. Fe + CuSO4 → FeSO4 + Cu Write balanced chemical equations
for each word equations
(c) iron metal + copper (II) sulfate → iron (II) sulfate + copper metal
Fe + CuSO4 → FeSO4 + Cu

8. 2Al+ 3CuCl2 → 2AlCl3 + 3Cu Write balanced chemical equations
for each word equations
(d) Aluminum metal + copper (II) chloride → aluminum chloride + copper metal
2Al+ 3CuCl2 → 2AlCl3 + 3Cu

9. 2NaClO3 → 2NaCl + 3O2 Write balanced chemical equations
for each word equations
(e) Sodium chlorate → sodium chloride + oxygen gas
2NaClO3 → 2NaCl + 3O2

10. Ca(CO3 )→ CaO + CO2 Write balanced chemical equations
for each word equations
(f) calcium carbonate → calcium oxide + carbon dioxide gas
Ca(CO3 )→ CaO + CO2

11. 2Zn + O2 → 2ZnO Write balanced chemical equations
for each word equations
(g) zinc metal + oxygen gas → zinc oxide
2Zn + O2 → 2ZnO

12. Cl2 + 2Na → 2NaCl Write balanced chemical equations
for each word equations
(h) Chlorine gas + sodium metal → sodium chloride
Cl2 + 2Na → 2NaCl

13. Al2(SO4)3 + 3BaCl2 → 2AlCl3 + 3BaSO4
Write balanced
chemical equations
for each word equations
(i) aluminum sulfate + barium chloride → aluminum chloride + barium sulfate
Al2(SO4)3 + 3BaCl2 → 2AlCl3 + 3BaSO4

14. BeF2 + Mg → MgF2 + Be Write balanced chemical equations
for each word equations
(j) beryllium fluoride + magnesium → magnesium fluoride + beryllium
BeF2 + Mg → MgF2 + Be