9701/23/O/N/18 · Chemistry October/November 2018 Paper 23
4 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 11 marks · Electrons, energy levels and atomic orbitals, Oxidation numbers, Metallic bonding, Formulas, Reacting masses and yield
- Question 2 · 15 marks · Nitrogen and ammonia, Dot-and-cross diagrams, Temperature and activation energy, Nitrogen oxides and pollution, Group 2 oxides, hydroxides and carbonates, Thermal decomposition
- Question 3 · 17 marks · Hess’s law, Homogeneous and heterogeneous catalysts, Addition polymerisation, Degradable polymers
- Question 4 · 17 marks · Organic synthesis, Reduction and nucleophilic addition, Nitriles and hydroxynitriles, Alkanes, Making halogenoalkanes, SN1 and SN2, Making alcohols, Organic formulas and naming, Infrared spectroscopy, Esters
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.