Grades 10–12 · High School · AP Chemistry
Illustrated AP Chemistry unit guides for chemistry students and AP test takers, built the way SOMATH builds its math classes: complete theory after every teaching image, original practice questions, and worked answers hidden until you try. Written on the Upper West Side; free to use anywhere.
Published guides
Each lesson covers one College Board unit with one teaching image per topic, five practice questions after each image, and a homework set of review questions and AP-style problems. New units are added here as they publish.
Moles and molar mass, mass spectra of elements, percent composition and empirical formulas, mixtures and purity, electron configuration, photoelectron spectroscopy, periodic trends, and ionic compounds. Eight illustrated topics, 40 practice questions, and 20 homework questions with hidden worked answers.
The AP Chemistry course
College Board organizes AP Chemistry into nine units. The percentages are the weight of each unit on the multiple-choice section of the exam, which has 60 multiple-choice questions in 90 minutes and 7 free-response questions in 105 minutes. Units are independent study guides here; start with the unit your class is on or the one you find hardest.
High school chemistry students in grades 10–12, AP Chemistry test takers preparing for the May exam, and families on the Upper West Side comparing study resources. The guides assume algebra fluency and a willingness to show units and significant figures; they do not assume a prior chemistry course.
The format mirrors our math classes: theory first, directly under the teaching image, then practice that moves from direct application to multi-step AP-style problems. Every trend is explained with a cause (nuclear charge, shielding, distance), every calculation carries its units, and every answer is hidden until the student commits to an attempt.
Students who take AP Chemistry alongside AP math can pair these guides with our AP Calculus AB/BC, AP Statistics, and AP Precalculus classes at 226 W 79th St, 1st Floor, New York, NY 10024. Call (646) 668-6151 or start with a free 30-minute evaluation.
AP is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, these study guides.
Frequently asked
Chemistry at SOMATH begins as a free library of illustrated AP Chemistry unit guides written in the same format as our math classes: complete theory, original practice questions, and hidden worked answers. Families interested in small-group chemistry instruction on the Upper West Side can book a free evaluation and we will discuss current options.
High school chemistry students in grades 10–12, AP Chemistry test takers reviewing for the May exam, and parents comparing study resources. Each guide follows College Board's unit and topic numbering so it matches any AP Chemistry classroom sequence.
Each guide pairs one teaching image per College Board topic with the full theory, five original practice questions, and a homework set of review questions and multi-part AP-style problems. Every answer is hidden behind a blue Answer control so students attempt the question first.
College Board weights the multiple-choice section by unit: Unit 3 (Properties of Substances and Mixtures) is 18–22%, Unit 8 (Acids and Bases) is 11–15%, and each of the other seven units is 7–9%. The exam has 60 multiple-choice questions and 7 free-response questions.
Yes. The guides teach from first principles, so a student in a regular or honors chemistry course can use them to go deeper. Units are independent, and no earlier guide is required.
Bring a recent assessment and your current school topics. We will help identify the next useful step.