Edexcel GCSE Combined Science Paper 4: Chemistry 2 Higher November 2021 examiner report (1SC0/2CH)
Examiner report
- Q1 - 9 marks - Concentration of solutions, Exothermic and endothermic reactions, Properties of ionic compounds, Reaction profiles
- Q2 - 7 marks - Atmospheric pollutants, Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals, Greenhouse gases and climate change
- Q3 - 11 marks - Electronic structure, Group 1: the alkali metals, Ionic bonding and ionic compounds, Tests for gases
- Q4 - 10 marks - Collision theory and activation energy, Factors affecting the rate of reaction, Rate of reaction
- Q5 - 12 marks - Amounts of substance in equations, Group 1: the alkali metals, Group 7: the halogens, Relative formula mass
- Q6 - 11 marks - Atmospheric pollutants, Bond energy calculations, Cracking and alkenes, Properties of hydrocarbons
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