Free AP Chemistry diagnostic
Free AP Chemistry practice test
15 questions from all nine units in 23 minutes. Then your score in each unit and a short lesson on the one to fix first.
- Four-option multiple choice, at the pace of Section I.
- A calculator, the periodic table and the equations sheet are allowed, as on the exam. No account.
- Move back and forth and flag questions.
The real exam
| Unit | Share of Section I |
|---|---|
| Unit 1: Atomic Structure and Properties | 7–9% |
| Unit 2: Compound Structure and Properties | 7–9% |
| Unit 3: Properties of Substances and Mixtures | 18–22% |
| Unit 4: Chemical Reactions | 7–9% |
| Unit 5: Kinetics | 7–9% |
| Unit 6: Thermochemistry | 7–9% |
| Unit 7: Equilibrium | 7–9% |
| Unit 8: Acids and Bases | 11–15% |
| Unit 9: Thermodynamics and Electrochemistry | 7–9% |
Section I: 60 multiple-choice questions in 90 minutes. Section II: 7 free-response questions in 105 minutes. Each section is half the score, and a calculator, the periodic table and the equations sheet are allowed on both.
What your result means
You get questions right in each unit, so you can see where to start. AP scores from 1 to 5 come from College Board's own conversion of both sections.
Teaching AP Chemistry?
Set this as a 23-minute check. Each student sees a score in every unit, and nobody needs an account.
Independent practice for the AP Chemistry exam. Not affiliated with or endorsed by College Board. AP and Advanced Placement are trademarks of College Board. College Board's own exam page is on apcentral.collegeboard.org.