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Chemistry · Edexcel 4CH1 · Chemistry Paper 2 · regional · January 2023

Edexcel IGCSE Chemistry Chemistry Paper 2 January 2023 examiner report (4CH1/2CR)

1h 15m 70 marks

Examiner report

  1. Q1 - 4 marks - Atoms, elements and compounds, Group 0: the noble gases, The pH scale and neutralisation
  2. Q2 - 5 marks - Solubility and solubility curves
  3. Q3 - 9 marks - Atmospheric pollutants, Enthalpy changes, Moles and amount of substance, Volumes of gases
  4. Q4 - 9 marks - Alcohols, Condensation polymerisation, Organic chemistry
  5. Q5 - 11 marks - Conservation of mass and balanced equations, Electronic structure, Ionic bonding and ionic compounds, Properties of ionic compounds
  6. Q6 - 13 marks - Electrolysis, Extraction of metals and reduction, Group 1: the alkali metals, Half equations at electrodes, Properties of ionic compounds, Reactivity of metals, Using electrolysis to extract metals
  7. Q7 - 11 marks - Concentration of solutions, The pH scale and neutralisation, Titrations
  8. Q8 - 8 marks - Bond energy calculations, Reaction profiles