9701/22/O/N/25 · Chemistry October/November 2025 Paper 22
4 questions, 60 marks. Each one links to its official mark scheme.
- Question 1 · 10 marks · Particles in the atom and atomic radius, Isotopes, Relative masses of atoms and molecules, Electrons, energy levels and atomic orbitals, Oxidation and reduction, Oxidation numbers, Balancing redox equations
- Question 2 · 20 marks · Period 3 physical properties, Explaining Period 3 trends, Reactions of Period 3 elements, Period 3 chlorides with water, Dynamic equilibrium, Le Chatelier's principle, Formulas, Thermal decomposition
- Question 3 · 14 marks · Characteristic organic reactions, Alkanes, Structural isomerism, Intermolecular forces, Arenes, Hess’s law
- Question 4 · 16 marks · Alkanes, Characteristic organic reactions, Organic formulas and naming, Structural isomerism, Nucleophilic substitution reactions, Oxidising alcohols, Esters, Infrared spectroscopy, Mass spectrometry
Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.