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AP Chemistry · 9 units · 91 topics

Score a 5 on AP Chemistry.

Nine units covering atomic structure, bonding, reactions, kinetics, thermodynamics, equilibrium, acids and bases, and electrochemistry.

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Study notes

Every AP Chemistry unit, explained.

Unit 1 is free to read in full. Every other unit shows its first topic free; a 7-day trial opens the rest.

  1. Unit 1Atomic Structure and Properties7–9% of the exam · 8 topicsFreeRead unit
  2. Unit 2Compound Structure and Properties7–9% of the exam · 7 topicsPreviewPreview
  3. Unit 3Properties of Substances and Mixtures18–22% of the exam · 13 topicsPreviewPreview
  4. Unit 4Chemical Reactions7–9% of the exam · 9 topicsPreviewPreview
  5. Unit 5Kinetics7–9% of the exam · 11 topicsPreviewPreview
  6. Unit 6Thermochemistry7–9% of the exam · 9 topicsPreviewPreview
  7. Unit 7Equilibrium7–9% of the exam · 12 topicsPreviewPreview
  8. Unit 8Acids and Bases11–15% of the exam · 11 topicsPreviewPreview
  9. Unit 9Thermodynamics and Electrochemistry7–9% of the exam · 11 topicsPreviewPreview
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AP Chemistry · Sample questions

1

The species Na+\text{Na}^+, Mg2+\text{Mg}^{2+}, Al3+\text{Al}^{3+}, and F−\text{F}^- are all isoelectronic with neon. Which of the following has the smallest ionic radius?
FAQ

AP Chemistry questions, answered.

What's on the AP Chemistry Exam?
The AP Chemistry Exam is 3h 15m long: Multiple choice (60 questions, 90 minutes, 50% of the score) and Free response (7 questions, 105 minutes, 50% of the score). These figures come from College Board's AP Chemistry exam page.
Are these AP Chemistry notes free?
Unit 1 is free to read in full, and every other unit shows its first topic free. A free 7-day trial opens all 9 units and the full-length practice tests.
How many units are in AP Chemistry?
AP Chemistry has 9 units: Unit 1, Atomic Structure and Properties (7–9% of the exam); Unit 2, Compound Structure and Properties (7–9% of the exam); Unit 3, Properties of Substances and Mixtures (18–22% of the exam); Unit 4, Chemical Reactions (7–9% of the exam); Unit 5, Kinetics (7–9% of the exam); Unit 6, Thermochemistry (7–9% of the exam); Unit 7, Equilibrium (7–9% of the exam); Unit 8, Acids and Bases (11–15% of the exam); Unit 9, Thermodynamics and Electrochemistry (7–9% of the exam).
When is the AP Chemistry Exam?
AP Exams are held over two weeks every May. College Board publishes the schedule for each year; the AP exam calendar lists the dates once they are announced.
How is the AP Chemistry Exam scored?
AP Exams are scored from 1 to 5. The AP Chemistry score calculator estimates your score from your results on each section.

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