9701/21/M/J/18 · Chemistry May/June 2018 Paper 21
4 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 20 marks · Homogeneous and heterogeneous catalysts, Bond energies, Enthalpy change definitions, Temperature and activation energy, Le Chatelier's principle, Formulas, Dot-and-cross diagrams, Brønsted–Lowry theory of acids and bases
- Question 2 · 9 marks · Intermolecular forces, Alkanes, Addition polymerisation
- Question 3 · 16 marks · Particles in the atom and atomic radius, Ionisation energy, Oxidation numbers of oxides and chlorides, Period 3 chlorides with water, Lattice structures
- Question 4 · 15 marks · Iodoform test and acidity, Organic formulas and naming, Structural isomerism, Oxidising alcohols, Making alkenes, Addition polymers and the bromine test
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.