WorksheetCloud: WORKSHEET
Grade: 9
Subject: Natural Sciences
Topic: Balancing Equations
ACTIVITY 1:
Balance the following equations.
1. HgO → Hg + O
2
2. KCℓO
3
→ KCℓ + O
2
3. SO
2
+ O
2
→ SO
3
4. Li + O
2
→ Li
2
O
5. NaNO
3
→ NaNO
2
+ O
2
6. N
2
+ H
2
→ NH
3
7. HNO
3
→ H
2
O + NO
2
+ O
2
8. ZnS + O
2
→ ZnO + SO
2
9. Pb + C → Pb + CO
2
10. NH
3
+ O
2
→ N
2
+ H
2
O
11. sodium + chlorine → sodium chloride
12. HgO → mercury + oxygen
Activity: Balance the following equations.
1. 2HgO → 2Hg + O
2
2. 2KCℓO
3
→ 2KCℓ + 3O
2
3. 2SO
2
+ O
2
→ 2SO
3
4. 4Li + O
2
→ 2Li
2
O
5. 2NaNO
3
→ 2NaNO
2
+ O
2
6. N
2
+ 3H
2
→ 2NH
3
7. 4HNO
3
→ 2H
2
O + 4NO
2
+ O
2
8. 2ZnS + 3O
2
→ 2ZnO + 2SO
2
9. 2PbO + C → 2Pb + CO
2
10. 4NH
3
+ 3O
2
→ 2N
2
+ 6H
2
O
11. Sodium + chlorine à sodium chloride
2Na + Cl
2
→ 2NaCl
12. HgO à mercury + oxygen
2HgO → 2Hg + O
2