Edexcel IGCSE Chemistry Chemistry Paper 1 June 2022 examiner report (4CH1/1C)
Examiner report
- Q1 - 5 marks - Electronic structure, Ionic bonding and ionic compounds, Subatomic particles, The periodic table
- Q2 - 11 marks - Mixtures and separation techniques, Solubility and solubility curves, The three states of matter
- Q3 - 10 marks - Atmospheric pollutants, Cracking and alkenes, Fractional distillation and petrochemicals
- Q4 - 10 marks - Corrosion and its prevention, Factors affecting the rate of reaction, The composition and evolution of the atmosphere
- Q5 - 11 marks - Alkenes, Crude oil, hydrocarbons and alkanes, Free-radical substitution, Isomerism, Organic chemistry, Relative formula mass
- Q6 - 15 marks - Amounts of substance in equations, Collision theory and activation energy, Conservation of mass and balanced equations, Factors affecting the rate of reaction, Tests for gases
- Q7 - 13 marks - Empirical formulae, Isotopes and relative atomic mass, Thermal decomposition
- Q8 - 10 marks - Diamond, graphite, graphene and fullerenes, Properties of small molecules
- Q9 - 11 marks - Amounts of substance in equations, Conservation of mass and balanced equations, Ionic bonding and ionic compounds, Oxidation and reduction in terms of electrons, Pure substances
- Q10 - 14 marks - Atmospheric pollutants, Conservation of mass and balanced equations, Covalent bonding, Identification of ions, Ionic bonding and ionic compounds, Moles and amount of substance, The pH scale and neutralisation
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