Free AP Chemistry, aligned to the CED

• Module 1What Is Chemistry?6 lessons
• Module 2Classifying Matter and Change8 lessons
• Module 3The Particle World: Atoms and Molecules7 lessons
• Module 4The Periodic Table5 lessons
• Module 5Chemical Formulas and Valence6 lessons
• Module 6Chemical Equations5 lessons
• Module 7Air, Water, and Solutions6 lessons
• Module 8Common Substances Around Us6 lessons

• 2.1Measurement and Calculation3 lessons
• 2.2Atomic Structure6 lessons
• 2.3Periodic Trends6 lessons
• 2.4Chemical Bonding and Molecular Structure8 lessons
• 2.5Nomenclature (Focus on English Names)5 lessons
• 2.6KeyThe Mole and Stoichio­metry7 lessons
• 2.7Chemical Reactions5 lessons
• 2.8Gases7 lessons
• 2.9Solutions5 lessons
• 2.10Thermo­chemistry6 lessons
• 2.11Reaction Rates and Equilibrium5 lessons
• 2.12Acids and Bases5 lessons
• 2.13Oxidation and Reduction4 lessons
• 2.14Intro to Nuclear and Organic Chemistry4 lessons

Unit names and topics follow the current College Board CED. Topic numbers in Units 7–9 still use the 2019 numbering: the current CED moves 7.13 (pH and Solubility) to 8.11 and 7.14 (Free Energy of Dissolution) to 9.6, and renumbers 9.6–9.10 as 9.7–9.11. All of these topics are covered here; only the numbers differ.

• Unit 1Atomic Structure and Properties8 lessons
• Unit 2Compound Structure and Properties7 lessons
• Unit 3KeyProperties of Substances and Mixtures13 lessons
• Unit 4Chemical Reactions9 lessons
• Unit 5Kinetics11 lessons
• Unit 6Thermo­chemistry9 lessons
• Unit 7Equilibrium14 lessons
• Unit 8KeyAcids and Bases10 lessons
• Unit 9Thermo­dynamics and Electro­chemistry10 lessons

• 4.1Exam Overview3 lessons
• 4.2Multiple-Choice Strategies3 lessons
• 4.3Free-Response Strategies6 lessons
• 4.4Lab Zone8 lessons
• 4.5Review and Practice Exams3 lessons