AP Chemistry Question Bank: 8,294 Questions

How the bank is organised

The AP Chemistry bank covers 9 units of the course: Atomic Structure and Properties (755), Molecular and Ionic Compound Structure and Properties (632), Intermolecular Forces and Properties (1,155), Chemical Reactions (684), Kinetics (1,073), Thermodynamics (864), Equilibrium (1,375), Acids and Bases (780), Applications of Thermodynamics (976).

Choose a unit, a topic, a difficulty and a set size, timed or untimed. Every question is multiple choice, with the answer and a worked explanation after you hand the set in.

With a free account you can try a fixed sample of 20 AP Chemistry questions, the same for everyone, with their answers and explanations.

Every topic and skill, with counts

Counted from the live question database. Only questions available to practise are included.

AP Chemistry

8,294 questions · 1,068 easy · 3,075 medium · 4,151 hard

AP Chemistry: questions by topic, skill and difficulty
Topic and skill	Easy	Medium	Hard	Total
Unit 1: Atomic Structure and Properties	94	282	379	755
Percent Composition and Empirical Formulas	13	37	50	100
PES Spectra Interpretation	13	36	50	99
Molar Mass Calculations	13	36	50	99
Mixture Analysis and Separation	9	32	40	81
Isotopic Abundance and Average Atomic Mass	10	34	41	85
Mole Concept and Avogadro's Number	12	35	49	96
Electron Configuration and Orbital Diagrams	13	36	49	98
Atomic Radius, Ionization Energy, Electronegativity	11	36	50	97
Unit 2: Molecular and Ionic Compound Structure and Properties	79	236	317	632
Drawing Lewis Structures and Formal Charge	5	26	31	62
Bond Energy and Potential Energy Curves	11	34	48	93
Crystal Lattice and Coulomb's Law	13	35	49	97
Metallic Bonding and Properties	13	36	49	98
Molecular Geometry and Hybridization	13	34	49	96
Ionic, Covalent, and Metallic Bonding	11	36	48	95
Resonance Structures and Stability	13	35	43	91
Unit 3: Intermolecular Forces and Properties	147	430	578	1,155
PV=nRT Calculations	13	37	50	100
Particulate Diagrams of Solutions	8	30	33	71
Crystalline vs Amorphous Solids	12	34	47	93
Real Gases and Van der Waals	13	37	50	100
Solution Preparation and Concentration	12	36	50	98
Phase Changes and Heating Curves	13	37	50	100
Dipole-Dipole and Hydrogen Bonding	12	36	50	98
Factors Affecting Solubility	13	37	50	100
London Dispersion Forces	13	37	50	100
Chromatography and Distillation	12	35	49	96
Gas Behavior and KMT Assumptions	13	37	49	99
Beer-Lambert Law and Spectroscopy	13	37	50	100
Unit 4: Chemical Reactions	90	250	344	684
Writing Net Ionic Equations	13	37	50	100
Evidence of Chemical Reactions	12	35	49	96
Particulate Representations of Reactions	13	31	48	92
Physical vs Chemical Changes	13	37	50	100
Titration Calculations	13	36	47	96
Stoichiometric Calculations	13	37	50	100
Synthesis, Decomposition, Combustion	13	37	50	100
Unit 5: Kinetics	141	395	537	1,073
Integrated Rate Laws	12	34	40	86
Mechanisms and Intermediates	13	37	50	100
Molecularity and Rate-Determining Step	13	37	50	100
Energy Diagrams and Transition States	12	32	47	91
Deriving Rate Laws from Mechanisms	13	37	50	100
Activation Energy and Collision Theory	13	37	50	100
Measuring and Expressing Reaction Rates	13	36	50	99
Catalysts and Reaction Mechanisms	13	37	50	100
Energy Profiles for Multi-Step Reactions	13	36	50	99
Rate Law and Reaction Order	13	37	50	100
Steady-State Kinetics	13	35	50	98
Unit 6: Thermodynamics	114	317	433	864
Calorimetry and Specific Heat	13	37	50	100
Using Hess's Law to Calculate ΔH	13	36	49	98
Heat Transfer and System/Surroundings	13	37	50	100
Standard Enthalpy of Formation Calculations	12	34	49	95
Heats of Fusion and Vaporization	13	37	50	100
Calculating ΔH from Bond Energies	13	36	50	99
Standard Enthalpy of Reaction	13	37	50	100
Coffee-Cup and Bomb Calorimetry	13	37	50	100
Enthalpy Diagrams	11	26	35	72
Unit 7: Equilibrium	178	512	685	1,375
Effect of pH on Solubility	13	37	50	100
Q vs K and Reaction Direction	13	37	50	100
ΔG and Solubility	13	37	50	100
ICE Tables and Equilibrium Calculations	12	36	45	93
Predicting Equilibrium Shifts	13	37	50	100
Solubility and Common Ions	13	37	50	100
Kc and Kp Calculations	13	36	48	97
Interpreting K Values	13	37	50	100
Particulate Diagrams at Equilibrium	13	34	44	91
Calculating Q and K	13	37	50	100
Q, K, and Stress Response	13	37	50	100
Manipulating Equilibrium Expressions	11	37	50	98
Dynamic Equilibrium Concept	13	37	50	100
Ksp and Solubility	12	36	48	96
Unit 8: Acids and Bases	100	291	389	780
Buffer Solutions and Henderson-Hasselbalch	11	35	47	93
Relationship Between pH and pKa	12	36	49	97
Ka and Kb Calculations	13	36	48	97
Strong Acid/Base pH Calculations	13	36	50	99
Titration Curves and Equivalence Point	13	37	50	100
Buffer Capacity and Range	13	37	49	99
Arrhenius, Brønsted-Lowry, Lewis Definitions	13	37	50	100
Structure and Acid/Base Strength	12	37	46	95
Unit 9: Applications of Thermodynamics	125	362	489	976
Standard Entropy and ΔS Calculations	11	35	48	94
Electrolysis Calculations	13	35	48	96
ΔG° and K Relationship	13	37	50	100
Entropy and Disorder	13	37	50	100
Cell Diagrams and Cell Potential	13	37	50	100
Nernst Equation	13	37	50	100
ΔG and Spontaneity	11	36	48	95
Relating E°, ΔG°, and K	13	35	49	97
Using Favorable Reactions to Drive Unfavorable Ones	13	37	50	100
Thermodynamic vs Kinetic Products	12	36	46	94

AP Chemistry question bank plans

One-off payment. Your plan opens after payment. Access lasts 240 days from opening and does not renew.

Full access

All units

$99.99

8,294 questions · 240 days

Advanced performance analysis

Accuracy by section, topic and subtopic
Results on easy, medium and hard questions
Time use in practice tests: rushed, on time, slow
Your 6 weakest topics, each with a link to practise it in the question bank
Weekly progress chart

Choose plan

See a sample report

Answer.
Then see why.

Your set is marked when you finish, with the correct answer and a worked explanation for every question.

The method, not just the keyYour answer sits next to the right one, with the reasoning that leads there and where the tempting choice goes wrong.
Original practice questionsEvery question is written for practice; none is official exam material.

See AP Chemistry plans

AP Chemistry · Unit 1: Atomic Structure and Properties

No question shown

Question 4 of 15Medium

ABCD

Your answer: B · WrongCorrect answer: D · Right

Worked explanation

Shown for every question in the set: the steps to D, and why B is tempting but wrong.

The answer screen, sketched without a question. Marks are illustrative.

AP Chemistry · your practice

Sample data

Accuracy by unit

Unit 1: Atomic Structure and Properties84%
Unit 2: Molecular and Ionic Compound Structure and PropertiesWeakest57%
Unit 3: Intermolecular Forces and Properties72%
Unit 4: Chemical Reactions66%

Next set: Unit 2: Molecular and Ionic Compound Structure and Properties. New sets favour questions you have not seen yet.

Find the weak spot.
Go again.

Questions you have answered are recorded, so each new set leans towards questions you have not seen. Filter the marked set for what you missed, then build the next one around it.

Practice that points somewhereChoose the section and topic that cost you most instead of starting from scratch.
Then test it wholeWhen a topic holds up in short sets, check it in a full-length AP Chemistry practice test.

See AP Chemistry practice tests

Percentages in the sample are illustrative, not a student’s results.

Questions

Can I try the bank before buying?

Yes. With a free account you can practise a fixed sample of 20 questions, the same set for everyone, and read their answers and explanations. A plan opens the whole AP Chemistry bank for its access period.

How long does question-bank access last?

Question-bank access lasts 120 days (240 days for an AP subject's bank) from the day it opens. SAT, GRE, GMAT, PTE and the AP banks open after payment. ACT, IELTS, TOEFL and TR-YOS plans open when every section they cover has questions, straight away if they do now. It is a fixed window, not a subscription: it does not renew and you are never charged again automatically.

Can I get a refund?

Practice tests, question banks and AI Tutor time are digital content. You can ask for a refund of a digital product you have not used within 14 days of the payment date. A product counts as used once any practice test in the pack has been started, any question in a paid section of the question bank has been opened, or any second of AI Tutor time has been used; a used product is not refunded. If you are charged twice by mistake, contact us and the duplicate charge is refunded.

AP Chemistry question bank

Build a practice set