5070/41/O/N/25 · O Level Chemistry October/November 2025 Paper 41
4 questions, 40 marks. Each one links to its official mark scheme.
- Question 1 · 6 marks · Fuels, Separation and purification, Experimental design
- Question 2 · 14 marks · The characteristic properties of acids and bases, The mole and the Avogadro constant, Experimental design, Exothermic and endothermic reactions
- Question 3 · 14 marks · The characteristic properties of acids and bases, Identification of ions and gases
- Question 4 · 6 marks · Experimental design
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.