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Chemistry · Edexcel 4CH1 · Chemistry Paper 1 · January 2022

Edexcel IGCSE Chemistry Chemistry Paper 1 January 2022 examiner report (4CH1/1C)

2h 110 marks

Examiner report

  1. Q1 - 7 marks - Atoms, elements and compounds, Fractional distillation and petrochemicals, Mixtures and separation techniques
  2. Q2 - 9 marks - Corrosion and its prevention
  3. Q3 - 7 marks - The three states of matter
  4. Q4 - 8 marks - Group 0: the noble gases, The composition and evolution of the atmosphere
  5. Q5 - 11 marks - Conservation of mass and balanced equations, Isotopes and relative atomic mass, Moles and amount of substance, Subatomic particles
  6. Q6 - 9 marks - Conservation of mass and balanced equations, Identification of ions, Ionic bonding and ionic compounds, Properties of ionic compounds, Relative formula mass
  7. Q7 - 8 marks - Making soluble salts, Mixtures and separation techniques
  8. Q8 - 15 marks - Addition polymerisation, Crude oil, hydrocarbons and alkanes, Empirical formulae, Free-radical substitution, Isomerism, Organic chemistry
  9. Q9 - 15 marks - Collision theory and activation energy, Conservation of mass and balanced equations, Factors affecting the rate of reaction, Moles and amount of substance
  10. Q10 - 9 marks - Covalent bonding, Diamond, graphite, graphene and fullerenes, Properties of small molecules
  11. Q11 - 12 marks - Amounts of substance in equations, Empirical formulae, Mixtures and separation techniques, Percentage yield, Pure substances