The AP® Chemistry textbook

9 units in framework order, then the skills the exam tests. Each topic is a notes page you can read on its own, free.

Units

Unit 1: Atomic Structure and Properties

  1. Moles and Molar Mass 1.1
  2. Mass Spectra of Elements 1.2
  3. Elemental Composition of Pure Substances 1.3
  4. Composition of Mixtures 1.4
  5. Atomic Structure and Electron Configuration 1.5
  6. Photoelectron Spectroscopy 1.6
  7. Periodic Trends 1.7
  8. Valence Electrons and Ionic Compounds 1.8

Unit 2: Compound Structure and Properties

  1. Types of Chemical Bonds 2.1
  2. Intramolecular Force and Potential Energy 2.2
  3. Structure of Ionic Solids 2.3
  4. Structure of Metals and Alloys 2.4
  5. Lewis Diagrams 2.5
  6. Resonance and Formal Charge 2.6
  7. VSEPR and Hybridization 2.7

Unit 3: Properties of Substances and Mixtures

  1. Intermolecular and Interparticle Forces 3.1
  2. Properties of Solids 3.2
  3. Solids, Liquids, and Gases 3.3
  4. Ideal Gas Law 3.4
  5. Kinetic Molecular Theory 3.5
  6. Deviation from Ideal Gas Law 3.6
  7. Solutions and Mixtures 3.7
  8. Representations of Solutions 3.8
  9. Separation of Solutions and Mixtures 3.9
  10. Solubility 3.10
  11. Spectroscopy and the Electromagnetic Spectrum 3.11
  12. Properties of Photons 3.12
  13. Beer-Lambert Law 3.13

Unit 4: Chemical Reactions

  1. Introduction for Reactions 4.1
  2. Net Ionic Equations 4.2
  3. Representations of Reactions 4.3
  4. Physical and Chemical Changes 4.4
  5. Stoichiometry 4.5
  6. Introduction to Titration 4.6
  7. Types of Chemical Reactions 4.7
  8. Introduction to Acid-Base Reactions 4.8
  9. Oxidation-Reduction (Redox) Reactions 4.9

Unit 5: Kinetics

  1. Reaction Rates 5.1
  2. Introduction to Rate Law 5.2
  3. Concentration Changes Over Time 5.3
  4. Elementary Reactions 5.4
  5. Collision Model 5.5
  6. Reaction Energy Profile 5.6
  7. Introduction to Reaction Mechanisms 5.7
  8. Reaction Mechanism and Rate Law 5.8
  9. Pre-Equilibrium Approximation 5.9
  10. Multistep Reaction Energy Profile 5.10
  11. Catalysis 5.11

Unit 6: Thermochemistry

  1. Endothermic and Exothermic Processes 6.1
  2. Energy Diagrams 6.2
  3. Heat Transfer and Thermal Equilibrium 6.3
  4. Heat Capacity and Calorimetry 6.4
  5. Energy of Phase Changes 6.5
  6. Introduction to Enthalpy of Reaction 6.6
  7. Bond Enthalpies 6.7
  8. Enthalpy of Formation 6.8
  9. Hess's Law 6.9

Unit 7: Equilibrium

  1. Introduction to Equilibrium 7.1
  2. Direction of Reversible Reactions 7.2
  3. Reaction Quotient and Equilibrium Constant 7.3
  4. Calculating the Equilibrium Constant 7.4
  5. Magnitude of the Equilibrium Constant 7.5
  6. Properties of the Equilibrium Constant 7.6
  7. Calculating Equilibrium Concentrations 7.7
  8. Representations of Equilibrium 7.8
  9. Introduction to Le Châtelier's Principle 7.9
  10. Reaction Quotient and Le Châtelier's Principle 7.10
  11. Introduction to Solubility Equilibria 7.11
  12. Common-Ion Effect 7.12

Unit 8: Acids and Bases

  1. Introduction to Acids and Bases 8.1
  2. pH and pOH of Strong Acids and Bases 8.2
  3. Weak Acid and Base Equilibria 8.3
  4. Acid-Base Reactions and Buffers 8.4
  5. Acid-Base Titrations 8.5
  6. Molecular Structure of Acids and Bases 8.6
  7. pH and pKa 8.7
  8. Properties of Buffers 8.8
  9. Henderson-Hasselbalch Equation 8.9
  10. Buffer Capacity 8.10
  11. pH and Solubility 8.11

Unit 9: Thermodynamics and Electrochemistry

  1. Introduction to Entropy 9.1
  2. Absolute Entropy and Entropy Change 9.2
  3. Gibbs Free Energy and Thermodynamic Favorability 9.3
  4. Thermodynamic and Kinetic Control 9.4
  5. Free Energy and Equilibrium 9.5
  6. Free Energy of Dissolution 9.6
  7. Coupled Reactions 9.7
  8. Galvanic (Voltaic) and Electrolytic Cells 9.8
  9. Cell Potential and Free Energy 9.9
  10. Cell Potential Under Nonstandard Conditions 9.10
  11. Electrolysis and Faraday's Law 9.11

Skills

Math you need

  1. Units and Dimensional Analysis
  2. Exponents
  3. Scientific Notation
  4. Significant Figures
  5. Logarithms