9701/21/O/N/22 · Chemistry October/November 2022 Paper 21
5 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 10 marks · Particles in the atom and atomic radius, Relative masses of atoms and molecules, Mass spectrometry, Isotopes, Electrons, energy levels and atomic orbitals, Ionisation energy
- Question 2 · 9 marks · Metallic bonding, Group 2 oxides, hydroxides and carbonates, Group 2 trends and solubility, Thermal decomposition, Some reactions of the halide ions, Halogens and hydrogen halides
- Question 3 · 18 marks · Explaining Period 3 trends, Period 3 chlorides with water, Period 3 physical properties, The reactions of chlorine, Making halogenoalkanes, Structure and properties, Hess’s law, Le Chatelier's principle, Structural isomerism, Shapes of molecules, Dot-and-cross diagrams
- Question 4 · 14 marks · Organic synthesis, Intermolecular forces, Cis/trans isomerism, Addition polymerisation
- Question 5 · 9 marks · Oxidising alkenes, Reduction and nucleophilic addition, Esters, Infrared spectroscopy, Mass spectrometry
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.