AP Chemistry — the whole course

All nine units: 999 lessons, about 4,800 questions, nine unit tests, 28 videos (Unit 2).

How to review: open a unit's Read everything page — every lesson, question, answer key and test is on one scrollable page in course order, with a note box under every lesson. Type notes as you go; they save in your browser. Press Send my notes to James at the page end (or Send on any single note) and they land with James the moment you send.

Unit 1 — Atomic Structure and Properties

66 lessons · 507 questions

This is the rebuilt Unit 1 (Oct 2026) — it replaces the version reviewed earlier; James is giving it final sign-off.

Read everything — notes enabled Decision cards (James) Student view

Unit 2 — Compound Structure and Properties

151 lessons · 494 questions · 28 videos

Read everything — notes enabled Student view (v3) All 28 videos — watch and rule

Unit 3 — Properties of Substances and Mixtures

140 lessons · 479 questions

Read everything — notes enabled Review hub (James) Student view

Unit 4 — Chemical Reactions

87 lessons · 424 questions

Read everything — notes enabled Review hub (James) Student view

Unit 5 — Kinetics

122 lessons · 536 questions

Read everything — notes enabled Decision cards (James) Student view

Unit 6 — Thermochemistry

94 lessons · 579 questions

Read everything — notes enabled Decision cards (James) Student view

Unit 7 — Equilibrium

95 lessons · 615 questions

Read everything — notes enabled Decision cards (James) Student view

Unit 8 — Acids and Bases

137 lessons · 665 questions

Read everything — notes enabled Decision cards (James) Student view

Unit 9 — Applications of Thermodynamics

107 lessons · 546 questions

Read everything — notes enabled Decision cards (James) Student view

Also on this site

The v3 proposal — what the re-authored course looks like Course duration review Exam skills module