5070/42/M/J/23 · O Level Chemistry May/June 2023 Paper 42
4 questions, 40 marks. Each one links to its official mark scheme.
- Question 1 · 6 marks · Experimental design, Corrosion of metals
- Question 2 · 14 marks · Acid–base titrations, The mole and the Avogadro constant
- Question 3 · 14 marks · Identification of ions and gases, Redox, Properties of metals, Reactivity series
- Question 4 · 6 marks · Experimental design
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.