5070/21/M/J/21 · O Level Chemistry May/June 2021 Paper 21
9 questions, 85 marks. Each one links to its official mark scheme.
- Question 1 · 6 marks · Formulae, functional groups and terminology, Carboxylic acids, Alkenes, Polymers, The characteristic properties of acids and bases
- Question 2 · 12 marks · Noble gases, Isotopes, The mole and the Avogadro constant, Solids, liquids and gases
- Question 3 · 10 marks · Fuels, Alkenes, Polymers
- Question 4 · 8 marks · Ion and ionic bonds, Transition elements, Redox
- Question 5 · 9 marks · Formulae, Air quality and climate, Extraction of metals
- Question 6 · 10 marks · Air quality and climate, Simple molecules and covalent bonds, Alkanes, Reversible reactions and equilibrium, The characteristic properties of acids and bases, Formulae
- Question 7 · 10 marks · The mole and the Avogadro constant, Rate of reaction, The characteristic properties of acids and bases, Group VII properties, Redox
- Question 8 · 10 marks · Atomic structure and the Periodic Table, Metallic bonding, Transition elements, Preparation of salts, Electrolysis, Identification of ions and gases
- Question 9 · 10 marks · Alkenes, Carboxylic acids, Rate of reaction, The mole and the Avogadro constant
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.