AP Chemistry
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Practice for the AP Chemistry exam
AP Exam
Thursday, May 6, 2027
12 p.m. local time (afternoon session)
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Unit 1: Atomic Structure and Properties
Unit 2: Compound Structure and Properties
Unit 3: Properties of Substances and Mixtures
- 3.1 - Intermolecular and Interparticle Forces
- 3.2 - Properties of Solids
- 3.3 - Solids, Liquids, and Gases
- 3.4 - Ideal Gas Law
- 3.5 - Kinetic Molecular Theory
- 3.6 - Deviation from Ideal Gas Law
- 3.7 - Solutions and Mixtures
- 3.8 - Representations of Solutions
- 3.9 - Separation of Solutions and Mixtures
- 3.10 - Solubility
- 3.11 - Spectroscopy and the Electromagnetic Spectrum
- 3.12 - Properties of Photons
- 3.13 - Beer-Lambert Law
Unit 4: Chemical Reactions
Unit 5: Kinetics
- 5.1 - Reaction Rates
- 5.2 - Introduction to Rate Law
- 5.3 - Concentration Changes Over Time
- 5.4 - Elementary Reactions
- 5.5 - Collision Model
- 5.6 - Reaction Energy Profile
- 5.7 - Introduction to Reaction Mechanisms
- 5.8 - Reaction Mechanism and Rate Law
- 5.9 - Pre-Equilibrium Approximation
- 5.10 - Multistep Reaction Energy Profile
- 5.11 - Catalysis
Unit 6: Thermochemistry
Unit 7: Equilibrium
- 7.1 - Introduction to Equilibrium
- 7.2 - Direction of Reversible Reactions
- 7.3 - Reaction Quotient and Equilibrium Constant
- 7.4 - Calculating the Equilibrium Constant
- 7.5 - Magnitude of the Equilibrium Constant
- 7.6 - Properties of the Equilibrium Constant
- 7.7 - Calculating Equilibrium Concentrations
- 7.8 - Representations of Equilibrium
- 7.9 - Introduction to Le Châtelier's Principle
- 7.10 - Reaction Quotient and Le Châtelier's Principle
- 7.11 - Introduction to Solubility Equilibria
- 7.12 - Common-Ion Effect
Unit 8: Acids and Bases
- 8.1 - Introduction to Acids and Bases
- 8.2 - pH and pOH of Strong Acids and Bases
- 8.3 - Weak Acid and Base Equilibria
- 8.4 - Acid-Base Reactions and Buffers
- 8.5 - Acid-Base Titrations
- 8.6 - Molecular Structure of Acids and Bases
- 8.7 - pH and pKa
- 8.8 - Properties of Buffers
- 8.9 - Henderson-Hasselbalch Equation
- 8.10 - Buffer Capacity
- 8.11 - pH and Solubility
Unit 9: Thermodynamics and Electrochemistry
- 9.1 - Introduction to Entropy
- 9.2 - Absolute Entropy and Entropy Change
- 9.3 - Gibbs Free Energy and Thermodynamic Favorability
- 9.4 - Thermodynamic and Kinetic Control
- 9.5 - Free Energy and Equilibrium
- 9.6 - Free Energy of Dissolution
- 9.7 - Coupled Reactions
- 9.8 - Galvanic (Voltaic) and Electrolytic Cells
- 9.9 - Cell Potential and Free Energy
- 9.10 - Cell Potential Under Nonstandard Conditions
- 9.11 - Electrolysis and Faraday's Law