AP Chemistry

Hello and welcome to AP Chemistry!

The textbook Chemistry 2e is free to use and available in both English and Spanish languages by visiting their website at openstax.org.

Flowers, P., Theopold, K., Langley, R., & Robinson, W. R. (2019). Chemistry 2e. OpenStax. https://openstax.org/details/books/chemistry-2e

Introduction:

AP Chemistry requires High School Chemistry and Algebra II as prerequisites.

Unit 1:

Moles and Molar Mass

Unit 1 now has aligned learning materials!

  • T01.01 Moles and Molar Mass
  • T01.02 Mass Spectra of the Elements
  • T01.03 Elemental Composition of Pure Substances
  • T01.04 Composition of Mixtures
  • T01.05 Atomic Structure and Electron Configuration
  • T01.06 Photoelectron Spectroscopy
  • T01.07 Periodic Trends
  • T01.08 Valence Electrons and Ionic Compounds

Unit 2:

Compound Structures and Properties

Unit 2 now has aligned learning materials!

  • T02.01 Types Chemical Bonds
  • T02.02 Intramolecular Force and Potential Energy
  • T02.03 Structure of Ionic Solids
  • T02.04 Structure of Metals and Alloys
  • T02.05 Lewis Diagrams
  • T02.06 Resonance and Formal Charge
  • T02.07 VSEPR and Hybridization

Unit 3:

Properties of Substances and Mixtures

Unit 3 now has aligned learning materials!

  • T03.01 Intermolecular and Interparticular Forces
  • T03.02 Properties of Solids
  • T03.03 Solids, Liquids, and Gases
  • T03.04 Ideal Gas Law
  • T03.05 Kinetic Molecular Theory
  • T03.06 Deviation from Ideal Gas Law
  • T03.07 Solutions and Mixtures
  • T03.08 Representations of Solutions
  • T03.09 Separation of Solutions and Mixtures
  • T03.10 Solubility
  • T03.11 Spectroscopy and the Electromagnetic Spectrum
  • T03.12 Properties of Photons
  • T03.13 Beer-Lambert Law

Unit 4:

Chemical Reactions

Unit 4 coming soon!

  • T04.01 Introductions to Reactions
  • T04.02 Net Ionic Equations
  • T04.03 Representations of Reactions
  • T04.04 Physical and Chemical Changes
  • T04.05 Stoichiometry
  • T04.06 Introduction to Titration
  • T04.07 Types of Chemical Reactions
  • T04.08 Introduction to Acid-Base Reactions
  • T04.09 Oxidation-Reduction (Redox) Reactions

Unit 5:

Kinetics

  • T05.01 Reaction Rates
  • T05.02 Introduction to Rate Law
  • T05.03 Concentration Changes Over Time
  • T05.04 Elementary Reactions
  • T05.05 Collision Model
  • T05.06 Reaction Energy Profile
  • T05.07 Introduction to Reaction Mechanism
  • T05.08 Reaction Mechanism and Rate Law
  • T05.09 Pre-Equilibrium Concentration
  • T05.10 Multistep Reaction Energy Profile
  • T05.11 Catalysis

Unit 6:

Thermochemistry

  • T06.01 Endothermic and Exothermic Process
  • T06.02 Energy Diagrams
  • T06.03 Heat Transfer and Thermal Equilibrium
  • T06.04 Heat Capacity and Calorimetry
  • T06.05 Energy of Phase Change
  • T06.06 Introduction to Enthalpy of Reaction
  • T06.07 Bond Enthalpies
  • T06.08 Enthalpy of Formation
  • T06.09 Hess’s Law

Unit 7:

Equilibrium

  • T07.01 Intriduction to Equilibrium
  • T07.02 Direction of Reversible Reactions
  • T07.03 Reaction Quotient and Equilibrium Constant
  • T07.04 Calculating the Equilibrium Constant
  • T07.05 Magnitude of the Equilibrium Constant
  • T07.06 Properties of the Equilibrium Constant
  • T07.07 Calculating the Equilibrium Constant
  • T07.08 Representations of Equilibrium
  • T07.09 Introduction to Le Châtelier’s Principle
  • T07.10 Reaction Quotient and Le Châtelier’s Principle
  • T07.11 Introduction to Solubility Equilibria
  • T07.12 Common-Ion Effect

Unit 8:

Acids and Bases

  • T08.01 Introduction to Acids and Bases
  • T08.02 pH and pOH of Strong Acids and Bases
  • T08.03 Weak Acid and Base Equilibria
  • T08.04 Acid-Base Reactions and Buffers
  • T08.05 Acid-Base Titrations
  • T08.06 Molecular Structure of Acids and Bases
  • T08.07 pH and pKa
  • T08.08 Properties of Buffers
  • T08.09 Henderson-Hasslebalch Equation
  • T08.10 Buffer Capacity
  • T08.11 pH and Solubility

Unit 9:

Thermodynamics and Electrochemistry

  • T09.01 Introduction to Entropy
  • T09.02 Absolute Entropy and Entropy Change
  • T09.03 Gibbs Free Energy and Thermodynamic Favorability
  • T09.04 Thermodynamic and Kinetic Control
  • T09.05 Free Energy and Equilibrium
  • T09.06 Free Energy of Dissolution
  • T09.07 Coupled Reactions
  • T09.08 Galvanic (Voltaic) and Electrolytic Cells
  • T09.09 Cell Potential and Free Energy
  • T09.10 Cell Potential Under Nonstandard Conditions
  • T09.11 Electrolysis and Faraday’s Law

AP Lab Requirements

According to the AP CED, the course requires 25% of instructional time be spent in laboratory work for a minimum of 16 hands-on labs, at least 6 of which are inquiry based. Additionally, colleges may require students to present their laboratory materials from AP science courses before granting college credit for laboratory work, so students should be encouraged to retain their laboratory notebooks, reports, and other materials.

As of the 2025-2026 school year, AP does not accept online or virtual lab participation as a substitute.

Info that may help on the AP Exam, but wont replace the live hands-on lab experience.

AP Testing Locations

There are a number of testing centers where students can take the AP tests without having to be enrolled in a high school that offers the AP Exam.

College board has more information on how to look for a school here. This site includes a searchable database of schools that administer the AP Exam and you may be able to find a school that will allow you or your child to enroll. The ledger also includes schools who offer AP Courses with online delivery.

The registration deadline is Mid November, although late submission requests are possible. If you find a school willing to work with you they may be eligible to waive late enrollment fees.