5070/22/M/J/20 · O Level Chemistry May/June 2020 Paper 22
10 questions, 85 marks. Each one links to its official mark scheme.
- Question 1 · 5 marks · Ion and ionic bonds, Identification of ions and gases, Preparation of salts, Atomic structure and the Periodic Table, Transition elements
- Question 2 · 7 marks · Exothermic and endothermic reactions, Hydrogen–oxygen fuel cells
- Question 3 · 12 marks · Relative masses of atoms and molecules, Formulae, functional groups and terminology, Solids, liquids and gases, Carboxylic acids, Rate of reaction, Reversible reactions and equilibrium
- Question 4 · 9 marks · Properties of metals, Reactivity series, Redox, Extraction of metals
- Question 5 · 6 marks · The characteristic properties of acids and bases, Acid–base titrations, The mole and the Avogadro constant
- Question 6 · 6 marks · Naming organic compounds, Formulae, functional groups and terminology, Carboxylic acids, Simple molecules and covalent bonds
- Question 7 · 10 marks · Atomic structure and the Periodic Table, Preparation of salts, Formulae, The mole and the Avogadro constant, Giant covalent structures
- Question 8 · 10 marks · Transition elements, Redox, The mole and the Avogadro constant, Reactivity series, Identification of ions and gases
- Question 9 · 10 marks · Air quality and climate, Formulae, Solids, liquids and gases, Simple molecules and covalent bonds, Identification of ions and gases
- Question 10 · 10 marks · Fuels, Formulae, functional groups and terminology, Identification of ions and gases, Alkenes, Polymers
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.