O Level Chemistry past papers

5070/12/O/N/21 · O Level Chemistry October/November 2021 Paper 12

38 questions, 38 marks. Each one links to its official mark scheme.

1. Question 1 · 1 mark · Acid–base titrations
2. Question 2 · 1 mark · Rate of reaction
3. Question 3 · 1 mark · Separation and purification
4. Question 4 · 1 mark · Separation and purification
5. Question 5 · 1 mark · Identification of ions and gases
6. Question 6 · 1 mark · Identification of ions and gases
7. Question 7 · 1 mark · Diffusion
8. Question 8 · 1 mark · Atomic structure and the Periodic Table
9. Question 9 · 1 mark · Formulae
10. Question 10 · 1 mark · Metallic bonding
11. Question 11 · 1 mark · The mole and the Avogadro constant
12. Question 12 · 1 mark · The mole and the Avogadro constant
13. Question 13 · 1 mark · The mole and the Avogadro constant
14. Question 14 · 1 mark · Electrolysis
15. Question 15 · 1 mark · Electrolysis
16. Question 17 · 1 mark · Exothermic and endothermic reactions
17. Question 18 · 1 mark · Rate of reaction
18. Question 19 · 1 mark · Rate of reaction
19. Question 20 · 1 mark · Group VII properties
20. Question 21 · 1 mark · Reversible reactions and equilibrium
21. Question 22 · 1 mark · The characteristic properties of acids and bases
22. Question 23 · 1 mark · Preparation of salts
23. Question 24 · 1 mark · Preparation of salts
24. Question 25 · 1 mark · Reversible reactions and equilibrium
25. Question 27 · 1 mark · Arrangement of elements
26. Question 28 · 1 mark · Arrangement of elements
27. Question 29 · 1 mark · Group VII properties
28. Question 30 · 1 mark · Transition elements
29. Question 31 · 1 mark · Reactivity series
30. Question 32 · 1 mark · Extraction of metals
31. Question 33 · 1 mark · Corrosion of metals
32. Question 34 · 1 mark · Extraction of metals
33. Question 35 · 1 mark · Water
34. Question 36 · 1 mark · Formulae, functional groups and terminology
35. Question 37 · 1 mark · Alkenes
36. Question 38 · 1 mark · Naming organic compounds
37. Question 39 · 1 mark · Carboxylic acids
38. Question 40 · 1 mark · Polymers

Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.