All papers

Combined Science A (Gateway) · OCR J250 · Chemistry Paper 3 · Foundation · June 2019

OCR GCSE Combined Science A (Gateway) Chemistry Paper 3 Foundation June 2019 examiner report (J250/03)

1h 10m 60 marks

Examiner report

  1. Q1 - 1 mark - The three states of matter
  2. Q2 - 1 mark - The three states of matter
  3. Q3 - 1 mark - Tests for gases
  4. Q4 - 1 mark - Relative formula mass
  5. Q5 - 1 mark - Electrolysis
  6. Q6 - 1 mark - Metals and non-metals
  7. Q7 - 1 mark - Conservation of mass and balanced equations
  8. Q8 - 1 mark - Empirical formulae
  9. Q9 - 1 mark - Relative formula mass
  10. Q10 - 1 mark - Subatomic particles
  11. Q11 - 9 marks - Chemical bonds, Electronic structure, Metals and non-metals, Subatomic particles
  12. Q12 - 6 marks - Chemical bonds, The three states of matter
  13. Q13 - 7 marks - Conservation of mass and balanced equations, Reactions of acids, The pH scale and neutralisation
  14. Q14 - 11 marks - Chromatography, Empirical formulae, Pure substances
  15. Q15 - 5 marks - Mixtures and separation techniques, Relative formula mass
  16. Q16 - 12 marks - Chemical bonds, Exothermic and endothermic reactions, Oxidation and reduction in terms of electrons, Reaction profiles