Edexcel IGCSE Chemistry Chemistry Paper 2 January 2022 examiner report (4CH1/2C)
Examiner report
- Q1 - 7 marks - Alkenes, Crude oil, hydrocarbons and alkanes, Organic chemistry, Producing ethanol
- Q2 - 8 marks - Atmospheric pollutants, Greenhouse gases and climate change, The composition and evolution of the atmosphere, Thermal decomposition
- Q3 - 9 marks - Solubility and solubility curves
- Q4 - 11 marks - Group 1: the alkali metals, Moles and amount of substance, The periodic table, The pH scale and neutralisation, Volumes of gases
- Q5 - 8 marks - Catalysts, Reaction profiles
- Q6 - 12 marks - Electrolysis, Half equations at electrodes, Properties of metals and alloys
- Q7 - 15 marks - Bond energy calculations, Carboxylic acids, Concentration of solutions, Condensation polymerisation, Dynamic equilibrium, Esters
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