AP Chemistry: Practice Questions, Units, and Exam Format
Atomic structure, bonding, reactions, kinetics, and equilibrium. See exactly what is on the exam, unit by unit, and practise it with a tutor that adapts to you.
Exam format
| Section | Questions | Time | Share of score |
|---|---|---|---|
| Section I: Multiple Choice | 60 | 1 hr 30 min | 50% |
| Section II: Free Response | 7 | 1 hr 45 min | 50% |
Units and exam weights
| Unit | Exam weight | Topics covered |
|---|---|---|
| Atomic Structure and Properties | 7 to 9% | Moles and molar mass, Mass spectra of elements, Elemental composition of pure substances, Composition of mixtures, Atomic structure and electron configuration, Photoelectron spectroscopy |
| Compound Structure and Properties | 7 to 9% | Types of chemical bonds, Intramolecular force and potential energy, Structure of ionic solids, Structure of metals and alloys, Lewis diagrams, Resonance and formal charge |
| Properties of Substances and Mixtures | 18 to 22% | Intermolecular and interparticle forces, Properties of solids, Solids, liquids, and gases, Ideal gas law, Kinetic molecular theory, Deviation from ideal gas law |
| Chemical Reactions | 7 to 9% | Introduction for reactions, Net ionic equations, Representations of reactions, Physical and chemical changes, Stoichiometry, Introduction to titration |
| Kinetics | 7 to 9% | Reaction rates, Introduction to rate law, Concentration changes over time, Elementary reactions, Collision model, Reaction energy profile |
| Thermochemistry | 7 to 9% | Endothermic and exothermic processes, Energy diagrams, Heat transfer and thermal equilibrium, Heat capacity and calorimetry, Energy of phase changes, Introduction to enthalpy of reaction |
| Equilibrium | 7 to 9% | Introduction to equilibrium, Direction of reversible reactions, Reaction quotient and equilibrium constant, Calculating the equilibrium constant, Magnitude of the equilibrium constant, Properties of the equilibrium constant |
| Acids and Bases | 11 to 15% | Introduction to acids and bases, pH and pOH of strong acids and bases, Weak acid and base equilibria, Acid-base reactions and buffers, Acid-base titrations, Molecular structure of acids and bases |
| Thermodynamics and Electrochemistry | 7 to 9% | Introduction to entropy, Absolute entropy and entropy change, Gibbs free energy and thermodynamic favorability, Thermodynamic and kinetic control, Free energy and equilibrium, Free energy of dissolution |
How Kalyta teaches AP Chemistry
Practice that adapts to you, an explanation for every answer, and a full rehearsal before the real thing. You spend your time on the units that move your score instead of the ones you have already got.
- Adaptive practice. Questions are picked around your current level, so you are always working just past what you can already do.
- Every answer explained. See why the right answer is right and why each other choice is wrong, with figures and step by step reasoning.
- An AI tutor you can steer. Ask why something works, ask for another example, or tell it to slow down and teach the idea from the start.
- Full exam rehearsals. Sit the real format under real timing and get a predicted score, so test day feels like something you have already done.
- Progress you can see. Watch your readiness climb unit by unit, and know what is solid before you walk in.
One subscription covers every course in the AP app, so you can study more than one without paying twice.
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