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AP Chemistry practice questions - frequently asked questions

Plain answers about how AP Chemistry Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real AP Chemistry exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The AP Chemistry exam spans 9 domains: Atomic Structure and Properties (7-9%); Compound Structure and Properties (7-9%); Properties of Substances and Mixtures (18-22%); Chemical Reactions (7-9%); Kinetics (7-9%); Thermochemistry (7-9%); Equilibrium (7-9%); Acids and Bases (11-15%); Thermodynamics and Electrochemistry (7-9%). Every practice question on this site is tagged to one of these domains.

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