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LearnCambridge97012025–2027Paper 4
Paper 4

A Level Structured Questions

Chemical energetics

Lattice energy and Born–Haber cycles · Entropy and Gibbs free energy2 subtopic lessons

Electrochemistry

Electrode potentials and cells · Electrolysis calculations2 subtopic lessons

Equilibria

pH, Ka and buffers · Kp, Ksp and partition2 subtopic lessons

Reaction kinetics

Rate equations and orders1 subtopic lessons

Group 2

Group 2: thermal stability and solubility1 subtopic lessons

Chemistry of transition elements

Transition element properties · Complex ions, ligands and colour · Reactions of aqua ions3 subtopic lessons

An introduction to A Level organic chemistry

Optical isomerism and chirality1 subtopic lessons

Hydrocarbons

Benzene and electrophilic substitution1 subtopic lessons

Halogen compounds

Phenol1 subtopic lessons

Hydroxy compounds

Phenol1 subtopic lessons

Carboxylic acids and derivatives

Acyl chlorides and acylation1 subtopic lessons

Nitrogen compounds

Phenylamine, amides and azo dyes · Amino acids, peptides and DNA2 subtopic lessons

Polymerisation

Condensation polymers1 subtopic lessons

Organic synthesis

Multi-step synthesis1 subtopic lessons

Analytical techniques

NMR spectroscopy · Chromatography techniques2 subtopic lessons