Full-length practice exam modeled on the official College Board AP Chemistry exam. 45 multiple-choice questions across all 9 units, plus 7 free-response questions (3 long, 4 short) covering equilibrium, thermodynamics, kinetics, stoichiometry, bonding, electrochemistry, and intermolecular forces. Calculator and equations sheet allowed.
Section I — Multiple Choice
45 questions · 90 minutes
45 multiple-choice questions across all 9 units (Atomic Structure, Bonding, IMFs, Reactions, Kinetics, Thermodynamics, Equilibrium, Acids/Bases, Applications of Thermodynamics). Calculator allowed.
Section II — Free Response
7 items · 105 minutes
7 free-response questions: Q1–Q3 long FRQs (10 pts each) and Q4–Q7 short FRQs (4 pts each). Self-graded rubric checklist.
Total time: 3h 15m. Each section has its own timer; sections are completed back-to-back. Free-response sections use a self-grading rubric checklist after you write your response.
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This full-length practice exam mirrors the real test’s sections, timing, and question mix so you can rehearse pacing and stamina before exam day. Every question is scored instantly with an explanation, and your results feed into your score prediction. For the most realistic read on where you stand, take it in one timed sitting.
AP Chemistry is a rigorous college-level course covering nine units organized under four Big Ideas: Scale/Proportion/Quantity, Structure and Properties, Transformations, and Energy. Content runs from atomic structure, periodicity, and bonding through intermolecular forces, stoichiometry and solutions, chemical reactions, kinetics, thermodynamics, equilibrium, acids and bases, and applications of thermodynamics including electrochemistry. The course emphasizes particulate-level reasoning: you are constantly asked to connect what happens among atoms, ions, and molecules to observable macroscopic behavior and to represent that understanding with diagrams, graphs, and equations. Equilibrium, acid-base chemistry, and thermodynamics are among the densest and most frequently tested topics, and they build on earlier units, so gaps in stoichiometry or bonding compound quickly. The exam rewards students who can move fluidly between symbolic, particulate, and graphical representations and who can justify claims with both calculations and conceptual explanations. A common stumbling block is treating chemistry as plug-and-chug; the free-response section frequently asks 'explain why' or 'justify your answer,' and unsupported numerical answers earn little credit. Mastery of significant figures, dimensional analysis, ICE tables, and reading titration and energy diagrams is essential. Because a calculator and a reference packet with equations and constants are provided, memorizing formulas matters less than knowing when and how to apply them. The strongest preparation combines steady problem practice across all nine units with timed FRQ work graded against official rubrics, plus laboratory reasoning, since experimental design and data analysis appear throughout the exam and reflect the course's required hands-on investigations.
Two sections over 3 hours 15 minutes, each worth 50%: Section I is 60 multiple-choice questions in 90 minutes; Section II is 7 free-response questions in 105 minutes (3 long and 4 short). A calculator and a reference packet with equations and constants are provided.
Section I (50%) and Section II (50%) form a composite that is converted to the reported AP score of 1 to 5.