AQA GCSE Trilogy Chemistry Paper 1 Higher June 2025 examiner report (8464/C/1H)
Materials
Examiner report
- Q1 - 9 marks - Concentration of solutions, Electrolysis of aqueous solutions
- Q2 - 10 marks - Exothermic and endothermic reactions, Relative formula mass
- Q3 - 12 marks - Group 7: the halogens, Subatomic particles, The development of the model of the atom
- Q4 - 11 marks - Extraction of metals and reduction, Half equations at electrodes, Properties of metals and alloys, Using electrolysis to extract metals
- Q5 - 9 marks - Bond energy calculations, Covalent bonding, Strong and weak acids, The three states of matter
- Q6 - 11 marks - Amounts of substance in equations, Conservation of mass and balanced equations
- Q7 - 8 marks - Giant covalent structures, Ionic bonding and ionic compounds, Properties of metals and alloys, Reactions of acids
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