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Combined Science A (Gateway) · OCR J250 · Chemistry Paper 4 · Foundation · June 2022

OCR GCSE Combined Science A (Gateway) Chemistry Paper 4 Foundation June 2022 mark scheme J250/04

1h 10m 60 marks

Practise the past exam questions by topic

Crude oil, hydrocarbons & alkanes15 Qs Reactivity of metals15 Qs Rate of reaction22 Qs Reversible reactions6 Qs +13 more
16 questions
  1. Q1 - 1 mark - Crude oil, hydrocarbons and alkanes
  2. Q2 - 1 mark - Reactivity of metals
  3. Q3 - 1 mark - Rate of reaction
  4. Q4 - 1 mark - Reversible reactions
  5. Q5 - 1 mark - Atmospheric pollutants
  6. Q6 - 1 mark - Crude oil, hydrocarbons and alkanes
  7. Q7 - 1 mark - Catalysts
  8. Q8 - 1 mark - Fractional distillation and petrochemicals
  9. Q9 - 1 mark - Rate of reaction
  10. Q10 - 1 mark - Greenhouse gases and climate change
  11. Q11 - 7 marks - The composition and evolution of the atmosphere, The periodic table
  12. Q12 - 8 marks - Extraction of metals and reduction, The periodic table, Using electrolysis to extract metals
  13. Q13 - 8 marks - Potable water
  14. Q14 - 9 marks - Catalysts, Cracking and alkenes
  15. Q15 - 6 marks - Life cycle assessment
  16. Q16 - 12 marks - Electronic structure, The periodic table, The three states of matter