Edexcel GCSE Combined Science Paper 4: Chemistry 2 Higher June 2023 examiner report (1SC0/2CH)
Examiner report
- Q1 - 9 marks - Collision theory and activation energy, Factors affecting the rate of reaction, Rate of reaction
- Q2 - 9 marks - Group 1: the alkali metals, Group 7: the halogens, Isotopes and relative atomic mass, The periodic table
- Q3 - 9 marks - Atmospheric pollutants, Covalent bonding, The composition and evolution of the atmosphere
- Q4 - 9 marks - Group 7: the halogens, Tests for gases
- Q5 - 11 marks - Bond energy calculations, Chemical bonds, Properties of small molecules, Reaction profiles, Relative formula mass
- Q6 - 13 marks - Atmospheric pollutants, Cracking and alkenes, Empirical formulae, Fractional distillation and petrochemicals, Greenhouse gases and climate change, Properties of hydrocarbons
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