Edexcel IGCSE Chemistry Chemistry Paper 2 January 2020 examiner report (4CH1/2C)
Examiner report
- Q1 - 5 marks - Atoms, elements and compounds, Identification of ions, Mixtures and separation techniques
- Q2 - 11 marks - Cracking and alkenes, Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals, Organic chemistry, Relative formula mass
- Q3 - 11 marks - Electrolysis, Empirical formulae, Oxidation and reduction in terms of electrons, Properties of metals and alloys
- Q4 - 9 marks - Concentration of solutions, The pH scale and neutralisation, Titrations
- Q5 - 8 marks - Bond energy calculations, Catalysts, Reaction profiles, Tests for gases
- Q6 - 11 marks - Alcohols, Atmospheric pollutants, Condensation polymerisation, Conservation of mass and balanced equations, Esters, Producing ethanol
- Q7 - 15 marks - Amounts of substance in equations, Conservation of mass and balanced equations, Making soluble salts, Organic chemistry, Reactivity of metals, Volumes of gases
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