Edexcel IGCSE Chemistry Chemistry Paper 2 November 2020 examiner report (4CH1/2C)
Examiner report
- Q1 - 5 marks - Mixtures and separation techniques
- Q2 - 7 marks - Chromatography
- Q3 - 10 marks - Alloys as useful materials, Conservation of mass and balanced equations, Extraction of metals and reduction, Oxidation and reduction in terms of electrons
- Q4 - 15 marks - Alcohols, Carboxylic acids, Esters, Organic chemistry, Producing ethanol
- Q5 - 15 marks - Alkenes, Atmospheric pollutants, Bond energy calculations, Conservation of mass and balanced equations, Reaction profiles
- Q6 - 11 marks - Concentration of solutions, Electrolysis, Identification of ions, Tests for gases, The pH scale and neutralisation, Titrations
- Q7 - 7 marks - Amounts of substance in equations, The effect of changing conditions on equilibrium, Volumes of gases
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