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Chemistry · Edexcel 4CH1 · Chemistry Paper 1 · regional · June 2022

Edexcel IGCSE Chemistry Chemistry Paper 1 June 2022 examiner report (4CH1/1CR)

2h 110 marks

Examiner report

  1. Q1 - 6 marks - Isotopes and relative atomic mass, Subatomic particles
  2. Q2 - 8 marks - Identification of ions, Mixtures and separation techniques, Pure substances, The three states of matter
  3. Q3 - 9 marks - Chromatography
  4. Q4 - 12 marks - Electronic structure, Group 0: the noble gases, Group 1: the alkali metals, Metals and non-metals, Moles and amount of substance, The pH scale and neutralisation
  5. Q5 - 11 marks - Moles and amount of substance, Relative formula mass, Tests for gases, Thermal decomposition
  6. Q6 - 9 marks - Conservation of mass and balanced equations, Covalent bonding, Giant covalent structures, Properties of small molecules
  7. Q7 - 15 marks - Addition polymerisation, Cracking and alkenes, Fractional distillation and petrochemicals, Organic chemistry
  8. Q8 - 10 marks - Calorimetry, Conservation of mass and balanced equations, Enthalpy changes, Exothermic and endothermic reactions, Oxidation and reduction in terms of electrons, Reactivity of metals
  9. Q9 - 10 marks - Catalysts, Collision theory and activation energy
  10. Q10 - 10 marks - Ionic bonding and ionic compounds, Mixtures and separation techniques, Properties of ionic compounds, Properties of small molecules
  11. Q11 - 10 marks - Amounts of substance in equations, Conservation of mass and balanced equations, Empirical formulae, Percentage yield