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Simple molecules and covalent bonds past paper questions

O Level Chemistry 5070 · Atoms, elements and compounds. 1 State that a covalent bond is formed when a pair of electrons is shared between two atoms leading to noble gas electronic configurations 2 Describe the formation of covalent bonds in simple molecules, including H2, Cl2, H2O, CH4, NH3, HCl, CH3OH, C2H4, O2, CO2 and N2. Use dot-and-cross diagrams to show the electronic configurations in these and similar molecules 3 Describe and explain in terms of structure and bonding the properties of simple molecular compounds: (a) low melting points and boiling points in terms of weak intermolecular forces (specific types of intermolecular forces are not required) (b) poor electrical conductivity

In Cambridge O Level Chemistry 5070, Simple molecules and covalent bonds came up in 40 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 The mole and the Avogadro constant, Formulae, Solids, liquids and gases, Air quality and climate.

50 questions, newest first

  1. 5070/11/O/N/25 Question 4 · 1 mark
  2. 5070/21/O/N/25 Question 4 part (a(ii)) · 1 mark
  3. 5070/21/O/N/25 Question 6 part (a) · 2 marks
  4. 5070/22/O/N/25 Question 4 part (a(ii)) · 1 mark
  5. 5070/22/O/N/25 Question 6 part (a) · 2 marks
  6. 5070/21/M/J/25 Question 3 part (e) · 1 mark
  7. 5070/22/M/J/25 Question 3 part (d) · 2 marks
  8. 5070/11/O/N/24 Question 6 · 1 mark
  9. 5070/12/O/N/24 Question 2 · 1 mark
  10. 5070/21/O/N/24 Question 6 parts (b) (c) · 2 marks
  11. 5070/22/O/N/24 Question 6 parts (b) (c) · 2 marks
  12. 5070/12/M/J/24 Question 5 · 1 mark
  13. 5070/12/M/J/24 Question 6 · 1 mark
  14. 5070/21/M/J/24 Question 2 part (c(iv)) · 2 marks
  15. 5070/22/M/J/24 Question 2 part (b(iv)) · 1 mark
  16. 5070/21/O/N/23 Question 4 part (e) · 2 marks
  17. 5070/22/O/N/23 Question 4 part (e) · 2 marks
  18. 5070/11/M/J/23 Question 5 · 1 mark
  19. 5070/12/M/J/23 Question 5 · 1 mark
  20. 5070/21/M/J/23 Question 7 parts (f(i)) (f(ii)) · 3 marks
  21. 5070/22/M/J/23 Question 7 parts (e(i)) (e(ii)) · 3 marks
  22. 5070/12/O/N/22 Question 10 · 1 mark
  23. 5070/12/O/N/22 Question 11 · 1 mark
  24. 5070/21/O/N/22 Question 2 part (a(i)) · 2 marks
  25. 5070/22/O/N/22 Question 2 part (a(i)) · 2 marks
  26. 5070/11/M/J/22 Question 10 · 1 mark
  27. 5070/12/M/J/22 Question 10 · 1 mark
  28. 5070/21/M/J/22 Question 2 parts (d(i)) (d(ii)) · 2 marks
  29. 5070/22/M/J/22 Question 2 parts (d(i)) (d(ii)) · 2 marks
  30. 5070/11/O/N/21 Question 9 · 1 mark
  31. 5070/21/O/N/21 Question 1 part (a) · 1 mark
  32. 5070/21/O/N/21 Question 10 part (b(ii)) · 1 mark
  33. 5070/22/O/N/21 Question 10 part (b(iii)) · 1 mark
  34. 5070/11/M/J/21 Question 8 · 1 mark
  35. 5070/12/M/J/21 Question 9 · 1 mark
  36. 5070/21/M/J/21 Question 6 part (b) · 1 mark
  37. 5070/22/M/J/21 Question 6 part (c(ii)) · 1 mark
  38. 5070/11/O/N/20 Question 12 · 1 mark
  39. 5070/12/O/N/20 Question 12 · 1 mark
  40. 5070/21/O/N/20 Question 2 part (a) · 3 marks
  41. 5070/21/O/N/20 Question 8 part (d(i)) · 1 mark
  42. 5070/22/O/N/20 Question 2 part (a) · 3 marks
  43. 5070/22/O/N/20 Question 8 part (c) · 1 mark
  44. 5070/11/M/J/20 Question 11 · 1 mark
  45. 5070/12/M/J/20 Question 11 · 1 mark
  46. 5070/21/M/J/20 Question 1 part (c) · 1 mark
  47. 5070/21/M/J/20 Question 7 part (e) · 1 mark
  48. 5070/21/M/J/20 Question 8 part (d) · 1 mark
  49. 5070/22/M/J/20 Question 6 parts (d) (e) · 3 marks
  50. 5070/22/M/J/20 Question 9 part (e) · 2 marks

More in Atoms, elements and compounds: Elements, compounds and mixtures, Atomic structure and the Periodic Table, Isotopes, Ion and ionic bonds, Giant covalent structures, Metallic bonding.

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