9701/21/O/N/19 · Chemistry October/November 2019 Paper 21
4 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 12 marks · Oxidation and reduction, The reactions of chlorine, Physical properties of the Group 17 elements, Alkanes
- Question 2 · 13 marks · Lattice structures, Structure and properties, Period 3 oxides and hydroxides, Shapes of molecules, Bond energies, Chemical periodicity of other elements
- Question 3 · 13 marks · Alkanes, Infrared spectroscopy, Formulas, Enthalpy change definitions, Calorimetry
- Question 4 · 22 marks · Organic formulas and naming, Shapes of organic molecules; σ and π bonds, Carboxylic acids, Intermolecular forces, Reduction and nucleophilic addition, Esters, Tests for carbonyls, Optical isomerism, Infrared spectroscopy, Cis/trans isomerism
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.