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Combined Science A (Gateway) · OCR J250 · Chemistry Paper 3 · Foundation · November 2021

OCR GCSE Combined Science A (Gateway) Chemistry Paper 3 Foundation November 2021 mark scheme J250/03

1h 10m 60 marks

Materials
Data sheet

Practise the past exam questions by topic

Electronic structure18 Qs Metals & non-metals9 Qs Diamond, graphite, graphene & fullerenes8 Qs Formulations6 Qs +15 more
17 questions
  1. Q1 - 1 mark - Electronic structure
  2. Q2 - 1 mark - Metals and non-metals
  3. Q3 - 1 mark - Diamond, graphite, graphene and fullerenes
  4. Q4 - 1 mark - Formulations
  5. Q5 - 1 mark - Conservation of mass and balanced equations
  6. Q6 - 1 mark
  7. Q7 - 1 mark - Empirical formulae
  8. Q8 - 1 mark - Conservation of mass and balanced equations
  9. Q9 - 1 mark - Electronic structure
  10. Q10 - 1 mark - Chemical bonds
  11. Q11 - 4 marks - Chromatography, Mixtures and separation techniques
  12. Q12 - 5 marks - Oxidation and reduction in terms of electrons, Reactions of acids, Relative formula mass
  13. Q13 - 8 marks - Reactions of acids, The pH scale and neutralisation
  14. Q14 - 6 marks - Pure substances, The three states of matter
  15. Q15 - 9 marks - Bonding, structure and the properties of matter, Chemical bonds, Conservation of mass and balanced equations, The three states of matter
  16. Q16 - 6 marks - Electronic structure, Subatomic particles
  17. Q17 - 12 marks - Exothermic and endothermic reactions, Ionic bonding and ionic compounds