Edexcel IGCSE Chemistry Chemistry Paper 2 June 2019 examiner report (4CH1/2CR)
Examiner report
- Q1 - 5 marks - Atoms, elements and compounds, Greenhouse gases and climate change, Group 0: the noble gases, Tests for gases, The composition and evolution of the atmosphere
- Q2 - 7 marks - Isotopes and relative atomic mass, Subatomic particles
- Q3 - 8 marks - Atmospheric pollutants, Fractional distillation and petrochemicals, Properties of hydrocarbons
- Q4 - 15 marks - Electrolysis, Group 7: the halogens, Half equations at electrodes, Ionic bonding and ionic compounds, Oxidation and reduction in terms of electrons, Properties of ionic compounds
- Q5 - 11 marks - Carboxylic acids, Conservation of mass and balanced equations, Esters
- Q6 - 15 marks - Concentration of solutions, The pH scale and neutralisation, Titrations
- Q7 - 9 marks - Amounts of substance in equations, Reversible reactions, The effect of changing conditions on equilibrium, Volumes of gases
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