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Year 8 Chemistry Worksheet
Oxidation and Displacement Reactions
30 Practice Questions to Master the Topic
Section A: Multiple Choice Questions
1. What does oxidation mean?
Gain of oxygen.
2. Which of the following is an oxidation reaction?
Magnesium + Oxygen → Magnesium Oxide.
3. Rust is mainly made of:
Iron Oxide.
4. Which metal is more reactive?
Zinc or Copper
Zinc.
5. Which reaction is a displacement reaction?
Zn + CuSO₄ → ZnSO₄ + Cu.
Section B: Fill in the Blanks
6. Oxidation means gaining ______.
Oxygen.
7. Iron + Oxygen → ______
Iron Oxide.
8. Magnesium + Oxygen → ______
Magnesium Oxide.
9. A more reactive metal can ______ a less reactive metal.
Displace.
10. Zn + CuSO₄ → ______ + ______
ZnSO₄ + Cu.
Section C: True or False
11. Oxidation means losing oxygen.
False.
12. Rusting is an oxidation reaction.
True.
13. Copper can displace zinc.
False.
14. Magnesium is more reactive than copper.
True.
15. Gold is highly reactive.
False.
Section D: Write Word Equations
16. Write the word equation for burning magnesium.
Magnesium + Oxygen → Magnesium Oxide.
17. Write the word equation for rusting iron.
Iron + Oxygen → Iron Oxide.
18. Zinc + Copper Sulfate → ?
Zinc Sulfate + Copper.
19. Magnesium + Copper Sulfate → ?
Magnesium Sulfate + Copper.
20. Carbon + Oxygen → ?
Carbon Dioxide.
Section E: Write Symbol Equations
21. Magnesium + Oxygen → Magnesium Oxide
2Mg + O₂ → 2MgO.
22. Carbon + Oxygen → Carbon Dioxide
C + O₂ → CO₂.
23. Sulfur + Oxygen → Sulfur Dioxide
S + O₂ → SO₂.
24. Zinc + Copper Sulfate → ?
Zn + CuSO₄ → ZnSO₄ + Cu.
25. Iron + Copper Sulfate → ?
Fe + CuSO₄ → FeSO₄ + Cu.
Section F: Reactivity Predictions
26. Will copper displace iron?
No.
27. Will zinc displace copper?
Yes.
28. Which metal is more reactive: Iron or Zinc?
Zinc.
29. Which metal is least reactive?
Gold.
30. Which metal is more reactive: Magnesium or Copper?
Magnesium.



