5070/21/M/J/22 · O Level Chemistry May/June 2022 Paper 21
9 questions, 85 marks. Each one links to its official mark scheme.
- Question 1 · 6 marks · Identification of ions and gases, Preparation of salts, Formulae, Redox
- Question 2 · 10 marks · Atomic structure and the Periodic Table, Arrangement of elements, Solids, liquids and gases, Simple molecules and covalent bonds, Properties of metals, The mole and the Avogadro constant
- Question 3 · 7 marks · Alcohols, Carboxylic acids
- Question 4 · 8 marks · Isotopes, Atomic structure and the Periodic Table, Ion and ionic bonds
- Question 5 · 14 marks · Reversible reactions and equilibrium, Formulae, Identification of ions and gases, Relative masses of atoms and molecules, The mole and the Avogadro constant, Electrolysis, Extraction of metals
- Question 6 · 10 marks · Air quality and climate, Redox, Exothermic and endothermic reactions, Rate of reaction
- Question 7 · 10 marks · Uses of metals, Reactivity series, Metallic bonding, Extraction of metals, The mole and the Avogadro constant
- Question 8 · 10 marks · Naming organic compounds, Formulae, functional groups and terminology, Alkenes, The mole and the Avogadro constant
- Question 9 · 10 marks · Reversible reactions and equilibrium, Preparation of salts, The mole and the Avogadro constant, Water, The characteristic properties of acids and bases
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.