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Chemistry · Edexcel 4CH1 · Chemistry Paper 1 · January 2023

Edexcel IGCSE Chemistry Chemistry Paper 1 January 2023 examiner report (4CH1/1C)

2h 110 marks

Examiner report

  1. Q1 - 6 marks - The three states of matter
  2. Q2 - 7 marks - Atoms, elements and compounds, Conservation of mass and balanced equations, Identification of ions, Mixtures and separation techniques, The three states of matter
  3. Q3 - 6 marks - Corrosion and its prevention, Group 0: the noble gases, The composition and evolution of the atmosphere
  4. Q4 - 7 marks - Chromatography, Mixtures and separation techniques
  5. Q5 - 7 marks - Oxidation and reduction in terms of electrons, Reactivity of metals
  6. Q6 - 10 marks - Addition polymerisation, Empirical formulae, Relative formula mass
  7. Q7 - 12 marks - Atmospheric pollutants, Conservation of mass and balanced equations, Crude oil, hydrocarbons and alkanes, Free-radical substitution, Isomerism, Organic chemistry
  8. Q8 - 10 marks - Ionic bonding and ionic compounds, Properties of ionic compounds, Relative formula mass
  9. Q9 - 10 marks - Covalent bonding, Diamond, graphite, graphene and fullerenes, Properties of small molecules
  10. Q10 - 9 marks - Calorimetry, Enthalpy changes
  11. Q11 - 13 marks - Amounts of substance in equations, Factors affecting the rate of reaction, Making soluble salts, Mixtures and separation techniques
  12. Q12 - 13 marks - Empirical formulae, Moles and amount of substance, Pure substances, Reversible reactions