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Combined Science A (Gateway) · OCR J250 · Chemistry Paper 9 · Higher · June 2024

OCR GCSE Combined Science A (Gateway) Chemistry Paper 9 Higher June 2024 examiner report (J250/09)

1h 10m 60 marks

Examiner report

  1. Q1 - 1 mark - The three states of matter
  2. Q2 - 1 mark - Metals and non-metals
  3. Q3 - 1 mark - Pure substances
  4. Q4 - 1 mark - The three states of matter
  5. Q5 - 1 mark
  6. Q6 - 1 mark
  7. Q7 - 1 mark - Conservation of mass and balanced equations
  8. Q8 - 1 mark - Moles and amount of substance
  9. Q9 - 1 mark - Reaction profiles
  10. Q10 - 1 mark - Empirical formulae
  11. Q11 - 12 marks - Chemical bonds, Conservation of mass and balanced equations, Electronic structure, Metals and non-metals, Subatomic particles
  12. Q12 - 8 marks - Bonding, structure and the properties of matter, Conservation of mass and balanced equations, Electrolysis of aqueous solutions, The three states of matter
  13. Q13 - 6 marks - Reactions of acids
  14. Q14 - 11 marks - Concentration of solutions, Ionic bonding and ionic compounds, Reactions of acids, Strong and weak acids
  15. Q15 - 8 marks - Amounts of substance in equations, Limiting reactants, Moles and amount of substance
  16. Q16 - 5 marks - Subatomic particles, The development of the model of the atom