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Chemistry · AQA 7405 · Paper 3 · June 2025

AQA A Level Chemistry Paper 3 June 2025 mark scheme 7405/3

2h 90 marks

Materials
Data booklet

Practise the past exam questions by topic

Born-Haber cycles & lattice enthalpy10 Qs Calorimetry8 Qs Determining orders of reaction15 Qs Rate equations & orders of reaction19 Qs +26 more
36 questions
  1. Q1 - 9 marks - Born-Haber cycles and lattice enthalpy, Calorimetry
  2. Q2 - 15 marks - Determining orders of reaction, Rate equations and orders of reaction
  3. Q3 - 11 marks - Electrode potentials and electrochemical cells, Oxidation states
  4. Q4 - 9 marks - Equilibrium constant Kc, Factors affecting the rate of reaction, Moles and amount of substance
  5. Q5 - 10 marks - Aldehydes and ketones, Infrared spectroscopy, Oxidation of alcohols
  6. Q6 - 6 marks - Carboxylic acids, Isomerism, Naming organic compounds
  7. Q7 - 1 mark - Amines
  8. Q8 - 1 mark - Elimination reactions
  9. Q9 - 1 mark
  10. Q10 - 1 mark - Elimination reactions
  11. Q11 - 1 mark - Period 3 elements and their oxides
  12. Q12 - 1 mark - Isotopes and relative atomic mass
  13. Q13 - 1 mark - Electrophilic addition
  14. Q14 - 1 mark - Group 2: the alkaline earth metals
  15. Q15 - 1 mark - Periodicity and Period 3 trends
  16. Q16 - 1 mark - Periodicity and Period 3 trends
  17. Q17 - 1 mark - Shapes of complex ions
  18. Q18 - 1 mark - Naming organic compounds
  19. Q19 - 1 mark - Period 3 elements and their oxides
  20. Q20 - 1 mark - Group 2: the alkaline earth metals
  21. Q21 - 1 mark - Sub-shells, orbitals and electron configuration, Variable oxidation states of transition metals
  22. Q22 - 1 mark - Shapes of complex ions
  23. Q23 - 1 mark - Ligand substitution reactions, Metal-aqua ions in solution, Shapes of complex ions
  24. Q24 - 1 mark
  25. Q25 - 1 mark - Periodicity and Period 3 trends
  26. Q26 - 1 mark - Period 3 elements and their oxides
  27. Q27 - 1 mark - Shapes of complex ions, Shapes of molecules and ions
  28. Q28 - 1 mark
  29. Q29 - 1 mark - Peptides and protein structure
  30. Q30 - 1 mark - Chlorine, chlorate(I) and water treatment, Period 3 elements and their oxides
  31. Q31 - 1 mark - Period 3 elements and their oxides, Shapes of molecules and ions
  32. Q32 - 1 mark - Shapes of complex ions
  33. Q33 - 1 mark - Peptides and protein structure
  34. Q34 - 1 mark
  35. Q35 - 1 mark - Amines
  36. Q36 - 1 mark - Electrophilic addition