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Combined Science A (Gateway) · OCR J250 · Chemistry Paper 10 · Higher · June 2022

OCR GCSE Combined Science A (Gateway) Chemistry Paper 10 Higher June 2022 examiner report (J250/10)

1h 10m 60 marks

Examiner report

  1. Q1 - 1 mark - Rate of reaction
  2. Q2 - 1 mark - Greenhouse gases and climate change
  3. Q3 - 1 mark - Rate of reaction
  4. Q4 - 1 mark - Greenhouse gases and climate change
  5. Q5 - 1 mark - Fractional distillation and petrochemicals
  6. Q6 - 1 mark - Crude oil, hydrocarbons and alkanes
  7. Q7 - 1 mark - Dynamic equilibrium
  8. Q8 - 1 mark - Conservation of mass and balanced equations
  9. Q9 - 1 mark - The periodic table
  10. Q10 - 1 mark - The composition and evolution of the atmosphere
  11. Q11 - 12 marks - Electronic structure, The periodic table, The three states of matter
  12. Q12 - 6 marks - Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals
  13. Q13 - 12 marks - Conservation of mass and balanced equations, Factors affecting the rate of reaction, Rate of reaction
  14. Q14 - 6 marks - Conservation of mass and balanced equations, Electrolysis, Using electrolysis to extract metals
  15. Q15 - 6 marks - Bonding, structure and the properties of matter, The periodic table
  16. Q16 - 8 marks - The effect of changing conditions on equilibrium