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AP Chemistry Practice Tests

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Free AP Chemistry Diagnostic Tests

Take the Varsity Learning Tools free diagnostic test for AP Chemistry to determine which academic concepts you understand and which ones require your ongoing attention. Each AP Chemistry problem is tagged down to the core, underlying concept that is being tested. The AP Chemistry diagnostic test results highlight how you performed on each area of the test. You can then utilize the results to create a personalized study plan that is based on your particular area of need.

AP Chemistry Diagnostic Test 1

Questions: 50
Test Difficulty:
Average Time Spent: 3 hrs 53 mins

AP Chemistry Diagnostic Test 2

Questions: 50
Test Difficulty:
Average Time Spent: 4 hrs 32 mins

AP Chemistry Diagnostic Test 3

Questions: 60
Test Difficulty:
Average Time Spent: 4 hrs 27 mins

AP Chemistry Diagnostic Test 4

Questions: 60
Test Difficulty:
Average Time Spent: 5 hrs 32 mins

AP Chemistry Diagnostic Test 5

Questions: 60
Test Difficulty:
Average Time Spent: 3 hrs 58 mins

AP Chemistry Diagnostic Test 6

Questions: 60
Test Difficulty:
Average Time Spent: 5 hrs 49 mins

For most high school students, any AP course represents a challenge in terms of the content, workload, and necessary preparation for its corresponding AP exam. AP chemistry is certainly no exception; however, with the right approach, this course can be mastered, and a top score can be attained on the AP exam. Whether you need top Chemistry tutors in Richmond, Chemistry tutors in Tulsa, or top Chemistry tutors in San Diego, working with a pro may take your studies to the next level.

AP Chemistry covers many topics, but several of them are interrelated. For instance, thermochemistry and thermodynamics both involve the concept of enthalpy, while electrochemistry expands on the concepts of a redox reaction and identifying reducing and oxidizing agents. Lewis structures, atom hybridization, and molecular geometry are another example of closely related topics. Thus, understanding one topic can also help you understand other topics. When studying, try to identify how different concepts are related.

Underlying these topics are basic concepts that must be mastered, and mastered early on in the course. One prominent example is balancing chemical equations. Virtually all later topics (enthalpy and entropy, electrochemistry, and stoichiometry, to name but a few) depend on one’s knowing how to write a balanced chemical equation.

Naming compounds and writing chemical formulas is another essential topic. In fact, it would be wise to expect an AP free-response question that names reactants and products and asks for a balanced chemical equation. Usually, providing this balanced equation makes up only the first of a four- or five-part question. If the chemical equation is wrong, however, it can make it very difficult to answer the rest of the questions correctly. In short, the topics covered early on in AP Chemistry (naming compounds, significant figures, naming and writing compound formulas, balancing equations, assigning oxidation numbers, etc.) provide the foundation for the topics covered later on in the course.

As for the AP exam itself, it consists of two parts: a 90-minute multiple choice section with 60 questions, and a 90-minute free-response section divided into short and long responses. Note also that a calculator is allowed for the free-response section, and that a periodic table and constant chart are provided. In other words, don’t waste your time trying to memorize the periodic table, formulas, and constants (such as the ideal gas law constant, R). They will be given! It is important, however, to understand how and when to use them. Varsity Tutors offers resources like a free AP Chemistry Flashcards help with your self-paced study, or you may want to consider an AP Chemistry tutor.

To approach the multiple-choice section, use process of elimination to narrow down choices if you are uncertain about a question, and don’t get bogged down on any given question. They are each worth the same number of points! If necessary, skip a question that you aren’t sure about, or take an educated guess if you can eliminate some choices, then move on! The free response section is more open-ended, but it does provide the opportunity for partial credit. If you find one part of one question to be difficult, see if you can answer subsequent parts of the question. Sometimes, the answer depends on previous parts of the question, but this is not always the case.

Finally, taking practice tests, before taking the AP Chemistry exam, is a good idea. You don’t have to take multiple practice tests in one session; in fact, this could be done over several sessions. The main goal is to become familiar with the type of questions that the exam might ask, and how such questions can be approached. When beginning to study the structure of the AP Chemistry exam and its content, you can begin by taking Varsity Tutors' free AP Chemistry Practice Tests. Each free AP Chemistry Practice Test consists of 10 to 12 AP Chemistry questions; think of each practice test as being a quiz that can help you hone your skills. In addition to the AP Chemistry Practice Tests and AP Chemistry tutoring, you may also want to consider taking some of our AP Chemistry Diagnostic Tests.

You might benefit from kicking off your review by taking one of the free Full-Length AP Chemistry Practice Tests, which cover the entire range of knowledge you may be asked about on the real exam. Just like the one for the regular practice tests, the complete practice tests’ results pages include thorough explanations and pertinent information on each question’s relevant concepts. The free online AP Chemistry practice tests can also aid in focusing your review plan by showing you the topics you have already mastered, and those you haven’t. You can take advantage of any of the other Learning Tools to review as you work toward test day, and check your progress by taking another Full-Length AP Chemistry Practice Test. Since they mimic the actual exam, you’ll be able to get that real test experience every time you take one.

By taking lots of AP Chemistry Practice Tests, you can identify your strengths and weaknesses in understanding AP Chemistry material. In becoming familiar with the test, and in learning and mastering the key concepts that it assesses, you can greatly improve your chances of doing well both in the AP Chemistry course and on the AP Chemistry exam.

Free AP Chemistry Practice Tests

Our completely free AP Chemistry practice tests are the perfect way to brush up your skills. Take one of our many AP Chemistry practice tests for a run-through of commonly asked questions. You will receive incredibly detailed scoring results at the end of your AP Chemistry practice test to help you identify your strengths and weaknesses. Pick one of our AP Chemistry practice tests now and begin!

Practice Tests by Concept

Atomic structure and properties practice test

Questions: 40
Test Difficulty:
Average Time Spent: 3 hrs 1 mins

Atomic structure and electron configuration practice test

Questions: 27
Test Difficulty:
Average Time Spent: 20 mins

Composition of mixtures practice test

Questions: 5
Test Difficulty:
Average Time Spent: 1 mins 54 secs

Elemental composition of pure substances practice test

Questions: 40
Test Difficulty:
Average Time Spent: 15 mins

Mass spectroscopy of the elements practice test

Questions: 29
Test Difficulty:
Average Time Spent: 1 hrs 40 mins

Moles and molar mass practice test

Questions: 21
Test Difficulty:

Photoelectron spectroscopy practice test

Questions: 5
Test Difficulty:
Average Time Spent: 18 mins

Chemical reactions practice test

Questions: 14
Test Difficulty:
Average Time Spent: 8 mins

Introduction for reactions practice test

Questions: 14
Test Difficulty:
Average Time Spent: 7 mins

Net ionic equations practice test

Questions: 5
Test Difficulty:

Compounds and molecules practice test

Questions: 40
Test Difficulty:
Average Time Spent: 1 hrs 14 mins

Bonding and forces practice test

Questions: 40
Test Difficulty:
Average Time Spent: 16 mins

Intermolecular forces practice test

Questions: 20
Test Difficulty:
Average Time Spent: 1 hrs 36 mins

Intramolecular force and potential energy practice test

Questions: 7
Test Difficulty:
Average Time Spent: 2 mins 29 secs

Other bonding concepts practice test

Questions: 5
Test Difficulty:
Average Time Spent: 1 mins 46 secs

Polarity and dipole practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 29 secs

Types of chemical bonds practice test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

Vsepr and bond hybridization practice test

Questions: 40
Test Difficulty:
Average Time Spent: 12 mins

Compounds practice test

Questions: 5
Test Difficulty:
Average Time Spent: 58 secs

Mass practice test

Questions: 12
Test Difficulty:
Average Time Spent: 1 hrs 11 mins

Organic compounds practice test

Questions: 4
Test Difficulty:
Average Time Spent: 54 secs

Polyatomic ions and functional groups practice test

Questions: 3
Test Difficulty:
Average Time Spent: 10 mins

Molecules practice test

Questions: 40
Test Difficulty:
Average Time Spent: 26 mins

Lewis diagrams practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 48 secs

Other molecular concepts practice test

Questions: 3
Test Difficulty:
Average Time Spent: 51 secs

Structure of ionic solids practice test

Questions: 5
Test Difficulty:

Elements and atoms practice test

Questions: 40
Test Difficulty:
Average Time Spent: 32 mins

Electrons and quantum theory practice test

Questions: 32
Test Difficulty:
Average Time Spent: 12 mins

History and experiments with electrons practice test

Questions: 1
Test Difficulty:
Average Time Spent: 30 secs

Elements, ions, and isotopes practice test

Questions: 19
Test Difficulty:
Average Time Spent: 8 mins

Other atomic concepts practice test

Questions: 2
Test Difficulty:
Average Time Spent: 43 secs

Radioactive decay and nuclear chemistry practice test

Questions: 1
Test Difficulty:
Average Time Spent: 8 secs

The periodic table practice test

Questions: 40
Test Difficulty:
Average Time Spent: 41 mins

Elemental properties practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 29 secs

History of the periodic table practice test

Questions: 1
Test Difficulty:
Average Time Spent: 27 secs

Periodic trends practice test

Questions: 4
Test Difficulty:
Average Time Spent: 2 mins 17 secs

Special groups practice test

Questions: 1
Test Difficulty:
Average Time Spent: 24 secs

Laboratory techniques and analysis practice test

Questions: 7
Test Difficulty:
Average Time Spent: 3 mins

Calculations practice test

Questions: 2
Test Difficulty:
Average Time Spent: 47 secs

Data analysis and other calculations practice test

Questions: 4
Test Difficulty:
Average Time Spent: 5 mins

Interpreting graphs and tables practice test

Questions: 2
Test Difficulty:
Average Time Spent: 8 mins

Significant figures practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 15 secs

Yield and error practice test

Questions: 2
Test Difficulty:
Average Time Spent: 2 mins 48 secs

Laboratory equipment and procedure practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 1 secs

Drawing conclusions from observations practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 10 secs

Hypotheses and procedures practice test

Questions: 2
Test Difficulty:
Average Time Spent: 31 secs

Laboratory equipment practice test

Questions: 8
Test Difficulty:
Average Time Spent: 11 mins

Safety practice test

Questions: 1
Test Difficulty:
Average Time Spent: 17 secs

Reactions and equilibrium practice test

Questions: 9
Test Difficulty:
Average Time Spent: 7 mins

Chemical equilibrium practice test

Questions: 26
Test Difficulty:
Average Time Spent: 23 mins

Calculating the equilibrium concentrations practice test

Questions: 5
Test Difficulty:
Average Time Spent: 11 mins

Equilibrium and thermodynamics practice test

Questions: 3
Test Difficulty:
Average Time Spent: 3 mins

Equilibrium constant and reaction quotient practice test

Questions: 13
Test Difficulty:
Average Time Spent: 9 mins

Le chatelier's principle practice test

Questions: 9
Test Difficulty:
Average Time Spent: 4 mins

Properties of the equilibrium constant practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 31 secs

System equilibrium practice test

Questions: 1
Test Difficulty:
Average Time Spent: 16 secs

Reaction types practice test

Questions: 9
Test Difficulty:
Average Time Spent: 2 mins 51 secs

Acid-base reactions practice test

Questions: 9
Test Difficulty:
Average Time Spent: 3 mins

Buffers practice test

Questions: 1
Test Difficulty:
Average Time Spent: 20 secs

Molecular structure of acids and bases practice test

Questions: 5
Test Difficulty:
Average Time Spent: 1 mins 46 secs

Ph practice test

Questions: 37
Test Difficulty:
Average Time Spent: 59 mins

Ph and pka practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 35 secs

Ph and poh of strong acids and bases practice test

Questions: 26
Test Difficulty:
Average Time Spent: 48 mins

Titrations and indicators practice test

Questions: 1
Test Difficulty:
Average Time Spent: 31 secs

Oxidation-reduction reactions practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 d 15 hrs

Balancing oxidation-reduction reactions practice test

Questions: 2
Test Difficulty:
Average Time Spent: 3 mins

Combustion practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 46 secs

Half reactions practice test

Questions: 1
Test Difficulty:
Average Time Spent: 29 secs

Oxidation state practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 35 secs

Principles of oxidation-reduction reactions practice test

Questions: 1
Test Difficulty:
Average Time Spent: 49 secs

Reduction potential practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 56 secs

Solutions and states of matter practice test

Questions: 5
Test Difficulty:
Average Time Spent: 5 mins

Gases practice test

Questions: 38
Test Difficulty:
Average Time Spent: 1 hrs 34 mins

Deviations from ideal gas law practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 10 secs

Effusion practice test

Questions: 7
Test Difficulty:
Average Time Spent: 11 mins

Ideal gas law practice test

Questions: 21
Test Difficulty:
Average Time Spent: 20 mins

Other gas concepts practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 44 secs

Phase changes practice test

Questions: 1
Test Difficulty:
Average Time Spent: 12 secs

Energy of phase changes practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 8 secs

Phase diagrams practice test

Questions: 2
Test Difficulty:
Average Time Spent: 30 secs

Types of phase changes practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 57 secs

Solids, liquids, and gases practice test

Questions: 14
Test Difficulty:
Average Time Spent: 58 mins

Solutions practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 53 secs

Colligative properties practice test

Questions: 15
Test Difficulty:
Average Time Spent: 9 mins

Concentration and units practice test

Questions: 13
Test Difficulty:
Average Time Spent: 27 mins

Other solution concepts practice test

Questions: 2
Test Difficulty:
Average Time Spent: 3 mins

Precipitates and calculations practice test

Questions: 5
Test Difficulty:
Average Time Spent: 5 mins

Representations of solutions practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 11 secs

Solubility practice test

Questions: 21
Test Difficulty:
Average Time Spent: 1 hrs 42 mins

Solubility and equilibrium practice test

Questions: 12
Test Difficulty:
Average Time Spent: 10 mins

Spectroscopy and electromagnetic spectrum practice test

Questions: 5
Test Difficulty:

Stoichiometry practice test

Questions: 3
Test Difficulty:
Average Time Spent: 15 mins

Balancing equations practice test

Questions: 9
Test Difficulty:
Average Time Spent: 12 mins

Limiting reagent practice test

Questions: 9
Test Difficulty:
Average Time Spent: 11 mins

Other stoichiometric calculations practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 48 secs

Stoichiometry with reactions practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 56 secs

Unit conversions practice test

Questions: 2
Test Difficulty:
Average Time Spent: 3 mins

Thermochemistry and kinetics practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 5 secs

Kinetics and energy practice test

Questions: 1
Test Difficulty:
Average Time Spent: 38 secs

Enzymes and catalysts practice test

Questions: 1
Test Difficulty:
Average Time Spent: 24 secs

Integrated rate laws practice test

Questions: 5
Test Difficulty:

Kinetic molecular theory practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 25 secs

Principles of reaction kinetics practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 17 secs

Reaction energy profile practice test

Questions: 8
Test Difficulty:
Average Time Spent: 5 mins

Reaction mechanisms practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 0 secs

Reaction rate and rate law practice test

Questions: 1
Test Difficulty:
Average Time Spent: 27 secs

Thermodynamics practice test

Questions: 1
Test Difficulty:
Average Time Spent: 1 mins 15 secs

Calorimetry and specific heat practice test

Questions: 1
Test Difficulty:
Average Time Spent: 56 secs

Cell potential and free energy practice test

Questions: 1
Test Difficulty:

Cell potential under non-standard conditions practice test

Questions: 5
Test Difficulty:
Average Time Spent: 1 mins 12 secs

Electrolysis and faraday's law practice test

Questions: 5
Test Difficulty:
Average Time Spent: 4 mins

Endergonic and exergonic reactions practice test

Questions: 3
Test Difficulty:
Average Time Spent: 2 mins 26 secs

Endothermic and exothermic reactions practice test

Questions: 2
Test Difficulty:
Average Time Spent: 47 secs

Enthalpy practice test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

Entropy practice test

Questions: 1
Test Difficulty:
Average Time Spent: 24 secs

Galvanic (voltai) and elecrolytic cells practice test

Questions: 7
Test Difficulty:
Average Time Spent: 3 mins

Gibbs free energy and spontaneity practice test

Questions: 14
Test Difficulty:
Average Time Spent: 20 mins

Hess' law practice test

Questions: 5
Test Difficulty:
Average Time Spent: 10 mins

Laws of thermodynamics practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 39 secs
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