9701/21/O/N/24 · Chemistry October/November 2024 Paper 21
4 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 16 marks · Electrons, energy levels and atomic orbitals, Particles in the atom and atomic radius, Relative masses of atoms and molecules, Mass spectrometry, Formulas, Cis/trans isomerism, Characteristic organic reactions
- Question 2 · 13 marks · Physical properties of the Group 17 elements, Halogens and hydrogen halides, Electrons, energy levels and atomic orbitals, Alkanes, The reactions of chlorine, Oxidation and reduction, Formulas, Nucleophilic substitution reactions
- Question 3 · 20 marks · Structure and properties, Lattice structures, Metallic bonding, Group 2 oxides, hydroxides and carbonates, Similarities and trends in the properties of the Group 2 metals, magnesium to barium, and their compounds, Nitrogen and ammonia, Ionisation energy, Intermolecular forces, Shapes of molecules, Reactions of Period 3 elements, Period 3 chlorides with water, Formulas
- Question 4 · 11 marks · Reduction and nucleophilic addition, Optical isomerism, Nitriles and hydroxynitriles, Making alcohols, Tests for carbonyls, Infrared spectroscopy
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.