AP Chemistry Practice Test
AP Chemistry is one of the most quantitative AP science courses. The May 2026 exam is a hybrid digital exam: 60 multiple-choice questions (90 min) in the Bluebook app and 7 handwritten free-response answers — 3 long (10 points each) plus 4 short (4 points each) — in a paper booklet over 105 minutes. The periodic table and formula/constants sheet are available throughout.
Practice AP Chemistry multiple-choice questions in a digital interface modeled on the real College Board Bluebook exam. Upload your own PDF or solve a published mock test, then get instant AI scoring and detailed answer explanations. Free for all students.
Complete Guide
Read the AP Chemistry complete study guide
Exam format, unit-by-unit breakdown, top FAQs from r/APStudents, study timeline, and study resources.
Exam format
60
questions
195
minutes
Hybrid digital (MCQ digital + paper FRQ)
| Section | Questions | Time | Score weight |
|---|---|---|---|
Section I (MCQ) | 60 | 90 min | 50% |
Section II (FRQ) 3 long multipart questions (10 pts each) + 4 short multipart questions (4 pts each). | 7 | 105 min | 50% |
Course units and exam weights
- Unit 1: Atomic Structure and Properties7-9%
- Unit 2: Molecular and Ionic Compound Structure and Properties7-9%
- Unit 3: Intermolecular Forces and Properties18-22%
- Unit 4: Chemical Reactions7-9%
- Unit 5: Kinetics7-9%
- Unit 6: Thermodynamics7-9%
- Unit 7: Equilibrium7-9%
- Unit 8: Acids and Bases11-15%
- Unit 9: Applications of Thermodynamics7-9%
Source: College Board AP Students Course and Exam Description.
Published AP Chemistry practice exams
1 examHow AI scoring works
When you upload an AP Chemistry PDF without an answer key, our system uses Google Gemini to read the document, extract every multiple-choice question, and generate the correct answers. The first attempt seeds the answer key; later attempts use the saved key, so AI runs only once per exam.
Each question is scored against the stored key in real time. After you submit, you can review every wrong answer with an AI-written explanation that grounds the reasoning in the original PDF page.
AI-generated keys may have errors. Always cross-check answers against an official source for high-stakes review.
Chemistry FAQ
- How long is the AP Chemistry exam and how is it scored?
- The exam is 3 hours 15 minutes total: 90 minutes for 60 multiple-choice questions (50%) and 105 minutes for 7 free-response questions (50%). Long FRQs are worth 10 points each (30 total) and short FRQs 4 points each (16 total) — 46 total FRQ points.
- Is AP Chemistry one of the hardest AP exams?
- Yes. AP Chemistry consistently sits among the lower pass rates (around 75% pass, but the share of 5s is one of the lowest among AP sciences). Strong algebra skills, mole-ratio fluency, and conceptual depth are all required.
- What is the AP Chemistry calculator policy?
- A scientific or graphing calculator is recommended on both sections. The formulas and constants sheet plus the periodic table are provided. Calculators with QWERTY keyboards or computer-algebra systems are NOT allowed.
- Which AP Chemistry unit gives students the most trouble?
- Equilibrium (Unit 7) and Acids and Bases (Unit 8, 11-15%) typically have the lowest scores on free-response questions. Intermolecular Forces (Unit 3, 18-22%) is the most heavily weighted unit. Practice ICE tables, Ka/Kb calculations, and buffer (Henderson-Hasselbalch) problems heavily.