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Separation and purification past paper questions

O Level Chemistry 5070 · Experimental techniques and chemical analysis. 1 Describe and explain methods of separation and purification using: (a) a suitable solvent (b) filtration (c) crystallisation (d) simple distillation (e) fractional distillation 2 Suggest suitable separation and purification techniques, given information about the substances involved 3 Identify substances and assess their purity using melting point and boiling point information

In Cambridge O Level Chemistry 5070, Separation and purification came up in 31 of the 72 papers on Paperstreak, for about 2 marks a paper when it does. It last came up in October/November 2025.

Often set with Experimental design, The mole and the Avogadro constant, Identification of ions and gases, Preparation of salts.

39 questions, newest first

  1. 5070/12/O/N/25 Question 38 · 1 mark
  2. 5070/41/O/N/25 Question 1 part (b) · 1 mark
  3. 5070/11/M/J/25 Question 39 · 1 mark
  4. 5070/12/M/J/25 Question 38 · 1 mark
  5. 5070/41/M/J/25 Question 4 · 6 marks
  6. 5070/22/O/N/24 Question 5 part (f) · 3 marks
  7. 5070/42/O/N/24 Question 1 parts (b(ii)) (b(iii)) (b(iv)) · 4 marks
  8. 5070/12/M/J/24 Question 40 · 1 mark
  9. 5070/11/M/J/23 Question 40 · 1 mark
  10. 5070/21/M/J/23 Question 3 part (a(iii)) · 1 mark
  11. 5070/22/M/J/23 Question 3 parts (a(ii)) (a(iii)) · 4 marks
  12. 5070/11/O/N/22 Question 2 · 1 mark
  13. 5070/11/M/J/22 Question 2 · 1 mark
  14. 5070/12/M/J/22 Question 2 · 1 mark
  15. 5070/41/M/J/22 Question 2 part (a) · 3 marks
  16. 5070/11/O/N/21 Question 1 · 1 mark
  17. 5070/11/O/N/21 Question 3 · 1 mark
  18. 5070/12/O/N/21 Question 3 · 1 mark
  19. 5070/12/O/N/21 Question 4 · 1 mark
  20. 5070/21/O/N/21 Question 2 part (c) · 2 marks
  21. 5070/41/O/N/21 Question 4 parts (c) (d) · 3 marks
  22. 5070/42/O/N/21 Question 1 parts (a) (b) · 4 marks
  23. 5070/42/O/N/21 Question 4 parts (b) (c) · 3 marks
  24. 5070/11/M/J/21 Question 2 · 1 mark
  25. 5070/11/M/J/21 Question 3 · 1 mark
  26. 5070/12/M/J/21 Question 2 · 1 mark
  27. 5070/12/M/J/21 Question 3 · 1 mark
  28. 5070/41/M/J/21 Question 1 part (c) · 2 marks
  29. 5070/42/M/J/21 Question 4 parts (c(ii)) (c(iii)) · 2 marks
  30. 5070/21/O/N/20 Question 5 part (d(i)) · 1 mark
  31. 5070/21/O/N/20 Question 8 part (a(ii)) · 3 marks
  32. 5070/22/O/N/20 Question 8 part (a(ii)) · 3 marks
  33. 5070/42/O/N/20 Question 4 · 4 marks
  34. 5070/11/M/J/20 Question 2 · 1 mark
  35. 5070/11/M/J/20 Question 5 · 1 mark
  36. 5070/12/M/J/20 Question 5 · 1 mark
  37. 5070/41/M/J/20 Question 1 parts (a(i)) (a(iii)) · 2 marks
  38. 5070/42/M/J/20 Question 3 parts (a) (b(i)) · 5 marks
  39. 5070/42/M/J/20 Question 4 part (c) · 2 marks

More in Experimental techniques and chemical analysis: Experimental design, Acid–base titrations, Chromatography, Identification of ions and gases.

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