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MCQ and exam-style chemistry review.
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Unit 1 of AP Chemistry covers the composition of atoms, moles and molar mass, electron configuration, photoelectron spectroscopy, and the periodic trends that follow from Coulombic attraction.
35 questions · 1 FRQs
Unit 2 covers the bonding models - ionic, covalent, and metallic - plus Lewis diagrams, resonance, formal charge, VSEPR geometry, and bond polarity.
34 questions · 1 FRQs
Unit 3 connects particle-level forces to bulk properties: London dispersion, dipole-dipole, and hydrogen bonding, plus the gas laws, kinetic molecular theory, solutions and molarity, and spectroscopy.
54 questions · 2 FRQs
Unit 4 covers writing and balancing equations, net ionic equations, stoichiometry with limiting reactants, titrations, and classifying reactions as precipitation, acid-base, or redox.
31 questions · 1 FRQs
Unit 5 covers reaction rates: rate laws from initial-rates data, integrated rate laws and half-life, collision theory, energy profiles, catalysts, and reaction mechanisms with rate-determining steps.
32 questions · 1 FRQs
Unit 6 (Thermochemistry) covers energy transfer as heat, endothermic and exothermic processes, calorimetry, enthalpy of reaction, Hess's law, formation enthalpies, and bond-energy estimates.
31 questions · 1 FRQs
Unit 7 covers reversible reactions and the equilibrium constant: writing K expressions, reaction quotient Q, ICE tables, Le Châtelier's principle, and solubility equilibria with Ksp.
44 questions · 2 FRQs
Unit 8 covers pH and pOH, strong versus weak acids and bases, Ka and Kb equilibria, buffers and Henderson-Hasselbalch, titration curves, and salt hydrolysis.
46 questions · 3 FRQs
Unit 9 covers entropy, Gibbs free energy and spontaneity, the link between ΔG° and K, and electrochemistry: galvanic and electrolytic cells, standard cell potential, and Faraday's-law calculations.
43 questions · 2 FRQs
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AP Chemistry exam strategy: reasoning from particle models, earning free-response partial credit, using the equations sheet, and pacing.
8 min read
How to write AP free-response answers that score: command verbs, showing work for partial credit, and self-scoring against the rubric.
8 min read
