Chemistry past papers › 9701/21/O/N/20

9701/21/O/N/20 Question 2

Chemistry October/November 2020 Paper 21 · 21 marks · Reactions of Period 3 elements, Period 3 oxides and hydroxides, Lattice structures, Brønsted–Lowry theory of acids and bases, Nitrogen oxides and pollution, Thermal decomposition, Hess’s law, Dot-and-cross diagrams, Oxidation numbers, Le Chatelier's principle, Structure and properties, Chemical periodicity of other elements

Mark scheme

Question 1 · Question 3

Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.