All papers

Chemistry A · OCR H432 · Periodic table, elements and physical chemistry · June 2019

OCR A Level Chemistry A Periodic table, elements and physical chemistry June 2019 examiner report (H432/01)

2h 15m 100 marks

Examiner report

  1. Q1 - 1 mark - Sub-shells, orbitals and electron configuration
  2. Q2 - 1 mark - Group 7: the halogens
  3. Q3 - 1 mark - Moles and amount of substance
  4. Q4 - 1 mark - Amounts of substance in equations
  5. Q5 - 1 mark - Oxidation states
  6. Q6 - 1 mark - Oxidation and reduction in terms of electrons
  7. Q7 - 1 mark - Ionisation energies
  8. Q8 - 1 mark - Amounts of substance in equations
  9. Q9 - 1 mark - Group 2: the alkaline earth metals
  10. Q10 - 1 mark - Amounts of substance in equations, Enthalpy changes
  11. Q11 - 1 mark - The Arrhenius equation
  12. Q12 - 1 mark - Bronsted-Lowry acids and bases
  13. Q13 - 1 mark - Shapes of complex ions
  14. Q14 - 1 mark - Transition metals, Variable oxidation states of transition metals
  15. Q15 - 1 mark - Electrode potentials and electrochemical cells, Fuel cells
  16. Q16 - 15 marks - Born-Haber cycles and lattice enthalpy, Enthalpy of solution and hydration, Group 2: the alkaline earth metals, Ionisation energies, Mass spectrometry
  17. Q17 - 9 marks - Ligand substitution reactions, pH calculations
  18. Q18 - 18 marks - Amounts of substance in equations, Electrode potentials and electrochemical cells, Ligand substitution reactions, Metal-aqua ions in solution, Redox equations, Redox titrations, Shapes of complex ions, Transition metals, Variable oxidation states of transition metals
  19. Q19 - 23 marks - Bond energy calculations, Entropy and Gibbs free energy, Equilibrium constant Kc, Equilibrium constant Kp, Hess's law, The effect of changing conditions on equilibrium
  20. Q20 - 14 marks - Amounts of substance in equations, pH calculations, Weak acids and Ka
  21. Q21 - 6 marks - Determining orders of reaction, Rate equations and orders of reaction