5070/22/O/N/20 · O Level Chemistry October/November 2020 Paper 22
9 questions, 85 marks. Each one links to its official mark scheme.
- Question 1 · 5 marks · The characteristic properties of acids and bases, Water, Ion and ionic bonds, Air quality and climate, Fertilisers
- Question 2 · 12 marks · Simple molecules and covalent bonds, Atomic structure and the Periodic Table, Electrolysis, The mole and the Avogadro constant
- Question 3 · 10 marks · Diffusion, Identification of ions and gases, Redox, Rate of reaction
- Question 4 · 10 marks · Water, Formulae, Arrangement of elements, Group I properties, The mole and the Avogadro constant, Electrolysis, Hydrogen–oxygen fuel cells
- Question 5 · 8 marks · Alkenes, Formulae, functional groups and terminology, Fuels, Polymers
- Question 6 · 10 marks · The characteristic properties of acids and bases, Carboxylic acids, Rate of reaction, Naming organic compounds, Formulae, functional groups and terminology
- Question 7 · 10 marks · Extraction of metals, Exothermic and endothermic reactions, Redox, The mole and the Avogadro constant, Metallic bonding
- Question 8 · 10 marks · The mole and the Avogadro constant, Separation and purification, Formulae, Simple molecules and covalent bonds, Solids, liquids and gases
- Question 9 · 10 marks · Isotopes, Redox, Formulae, Reversible reactions and equilibrium, Preparation of salts
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.