All papers

Combined Science A (Gateway) · OCR J250 · Chemistry Paper 10 · Higher · June 2024

OCR GCSE Combined Science A (Gateway) Chemistry Paper 10 Higher June 2024 examiner report (J250/10)

1h 10m 60 marks

Examiner report

  1. Q1 - 1 mark - Oxidation and reduction in terms of electrons
  2. Q2 - 1 mark - The periodic table
  3. Q3 - 1 mark - The composition and evolution of the atmosphere
  4. Q4 - 1 mark - Catalysts
  5. Q5 - 1 mark - Cracking and alkenes
  6. Q6 - 1 mark - The pH scale and neutralisation
  7. Q7 - 1 mark - Rate of reaction
  8. Q8 - 1 mark - Alternative methods of extracting metals
  9. Q9 - 1 mark - Conservation of mass and balanced equations
  10. Q10 - 1 mark - The effect of changing conditions on equilibrium
  11. Q11 - 12 marks - Conservation of mass and balanced equations, Extraction of metals and reduction, Life cycle assessment, Oxidation and reduction in terms of electrons, Reducing the use of resources, Using electrolysis to extract metals
  12. Q12 - 4 marks - Mixtures and separation techniques
  13. Q13 - 7 marks - Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals
  14. Q14 - 7 marks - Conservation of mass and balanced equations, Reactivity of metals
  15. Q15 - 7 marks - Greenhouse gases and climate change
  16. Q16 - 6 marks - Factors affecting the rate of reaction, Rate of reaction
  17. Q17 - 7 marks - Electronic structure, The periodic table