AP Chemistry Multiple Choice Questions MCQs Revview | Fiveable (2024)

Acing the AP Chem MCQ Section

Preparing for the AP Chem exam? Don’t worry, you’ll be all set to master the MCQs once you review these strategies and know the logistics of the section.

Logistics of the MCQ Section:

The MC section of the AP exam is comprised of 60 questions that could include calculations and several concepts. You have an hour and a half to complete this portion and it is worth 50% of the exam. This means you have about 1.5-2 min per question if you’re aiming to finish all the questions.

If you find yourself stuck on a set of questions, use the context of the problem to make a good guess and keep going. It’s better to get some points for possibly getting a question from guessing than leaving it blank. You are not allowed to have a calculator in this section.

Weight of Each Unit on this Section:

Unit 1: Atomic Structure and Properties 7–9%

Unit 2: Molecular and Ionic Compound Structure and Properties 7–9%

Unit 3: Intermolecular Forces and Properties 18–22%

Unit 4: Chemical Reactions 7–9%

Unit 5: Kinetics 7–9%

Unit 6: Thermodynamics 7–9%

Unit 7: Equilibrium 7–9%

Unit 8: Acids and Bases 11–15%

Unit 9: Applications of Thermodynamics 7–9%

Strategies for the AP Chemistry Multiple Choice Section:

You need to build time management skills, otherwise it’s going to be difficult to do this section. Every couple pages, glance at the time and if you find yourself falling behind, pick up your pace and keep going. You need to accept that you may end up guessing on questions.

The goal isn’t to get every single question right necessarily but to complete with highest accuracy while finishing all of the questions.When starting a question, keep your mind focused on the question that’s being asked and push through each MC question. Once you identify what’s being asked, think about what tools you need to answer it: Calculation, Formula, or Concept?

Stay on task because as you practice, you’re building mental stamina to retain the information you’re learning.Don’t try to memorize only. Make sure you understand the why and the how behind a concept or calculation. Use your AP Chem equations sheet and periodic table for your benefit.

Make sure you do several practice problems before the exam and understand what you’re doing. When you get questions wrong, ask a teacher or someone aware of the content to explain the problem. It defeats the purpose of doing MC practice if you do the problems but then choose not to ask someone to clarify a weak point that you’re confused about.

Forming a study group with people who are going to be focused may be useful because you can ask questions about concepts you don’t understand. Make sure you understand the basic concepts for each unit and then dive into the harder content.

Let’s Do Some MCQ Practice Problems:

1. Which choice is true when a pure, covalent solid is heated gradually at its melting point until roughly half of the compound has been converted to a liquid?

A: As the temperature increases, the average kinetic energy of the molecules in the liquid phase also increases.

B: The total of the IMF’s holding the solid together decrease to zero as the solid melts continuously.

C: As the substance becomes a liquid, the volume increases.

D: The average kinetic energy (KE) of the substance stays the same.

Answer: The answer is D because the energy is going into changing the phase of the substance instead of increasing its temperature.

2. Which choice below contributes the least to determining the bulk physical properties of a substance?

A: The forces of attraction between the particles in the substance

B: The elements that make up the substance.

C: The spacing between and the orderliness of the particles that make up the substance

D: The shape of the particles that make up the substance.

Answer: The answer is B because elements are substances that cannot be further broken down into simpler substances. Different structures and bonds distinguish substance shapes more than the elements do.

3. Which of the following explains why Argon can be solidified at a low temperature?

A: Hydrogen bonding

B: Covalent Bonding

C: London Dispersion Forces

D: Metallic Bonding

Answer: The answer is C because Argon is a Noble Gas so the London Dispersion Forces result in the gas condensing into a liquid since no other force holds a gas together. Noble gases have extremely low boiling points.

Final Tips:

The goal of this study guide was to help you face the MCQ section with more confidence and less fear. It may sound like a cliche but “practice makes perfect.” The more practice you get, the less blindsided you’ll feel when you sit down to take the actual exam. Stay focused, take breaks, and have a little fun while you study. You’ve got this!

AP Chemistry Multiple Choice Questions MCQs Revview | Fiveable (2024)


Is AP Chem MCQ hard? ›

AP Chemistry multiple-choice questions can be quite challenging as they test both your conceptual understanding and your ability to solve problems with calculations. The exam is designed to assess your grasp of the chemistry principles you've learned throughout the school year.

What's a good MCQ score for AP Chem? ›

AP Chem Pass Rate – AP Chem Score Calculator

In 2023, a total of 139,448 students took the AP Chemistry exam. However, out of that entire pool, only 16.05% of students scored a 5. Meanwhile, 27.10% of students scored a 4, and 31.96% of students scored a 3. The average score for the 2023 AP Chem exam was 3.26.

What percent is a 5 on AP Chem? ›

While the exact percentage needed for a 5 can vary each year, you can estimate that you'll generally need to score around 65% to 75% of the total possible points to earn a 5 on the AP Chemistry exam.

How to do good on AP Chem MCQ? ›

Read the question thoroughly and mark the important information by circling or underlining the text. Consider what you know about the concept the question is testing. Go through the answer choices carefully and eliminate the answer choices that are clearly incorrect.

What is the most failed AP exam? ›

At many high schools, AP Physics is notorious for its difficulty level. In addition, it has the lowest overall pass rate of any AP exam.

Is AP Chem just memorization? ›

Complex Concepts:

Students dive into intricate theories like molecular orbital theory, advanced thermodynamics, and chemical kinetics. These topics require a deep understanding and the ability to think abstractly, often pushing students beyond mere memorization to a more profound conceptual comprehension.

How many people get 100% on AP Chem? ›

11 students so far, out of ~141,000 who took the AP Chemistry Exam, earned all 100/100 points possible on this year's exam.

What is 60% on AP test? ›

Yes, a 60 is considered a passing grade in AP classes. In AP, the average passing rate is 60-70%.

What is the hardest unit in AP Chemistry? ›

Thermodynamics (Unit 6) - This is considered the hardest unit for many students because it involves complex topics like entropy, enthalpy, and Gibbs free energy. Calculations can be challenging, and understanding the conceptual aspects requires a good grasp of energy and spontaneity.

Is a 50% a 5 on the AP test? ›

As a general guide, though, you can consider roughly more than 70% correct as being in the 5 range, 50-69% for a score of 4, 40-49% for a score of 3, 30-39% for a 2, and below 30% would likely be a 1. Again, these ranges are approximations and can vary by subject and by year.

Is AP Chem curved? ›

Every year, the College Board® curves AP exam scores to account for normal deviation in question difficulty while retaining a degree of standardization and consistency across AP Chemistry exams administered year to year.

Are AP exams curved? ›

AP test scores are indeed "curved," but it's more accurate to call it a "scaling process." Instead of a traditional curve that compares your performance to other students' performance, the AP exam scaling process converts your raw score (the number of points you earned through multiple-choice questions and free- ...

How to do well on AP MCQ? ›

Determine your own answer before examining the choices OR—more typically—use process of elimination (and cross out the choices you know are wrong). Focus on the question's wording. Read all the choices. Don't select the first right answer when a later option is better.

How to not fail AP Chem exam? ›

Use a study outline (teacher supplied or your own) to focus on the concepts and skills most likely to be tested. If your teacher offers tutorial sessions, make every effort to attend. Consider studying in groups to go over challenging problems and/or concepts, and ask your teacher for help when you have difficulties.

How many MCQ are on AP Chem? ›

60 multiple choice questions

What is the hardest thing in AP Chem? ›

Thermodynamics (Unit 6) - This is considered the hardest unit for many students because it involves complex topics like entropy, enthalpy, and Gibbs free energy. Calculations can be challenging, and understanding the conceptual aspects requires a good grasp of energy and spontaneity.

How difficult is the AP Chem exam? ›

In 2022, around 66% of test takers earned a 3 or above on their AP exams. Students taking AP Chemistry had a pass rate of about 54%. You could conclude that AP Chemistry is more challenging than some other AP subjects since the exam's pass rate is lower than the average pass rate for all other AP classes.

Is AP Chem the hardest AP science? ›

Okay, Seriously, Which AP Classes Are the Hardest? United States History, Biology, English Literature, Calculus BC, Physics C, and Chemistry are often named as the hardest AP classes and tests. These classes have large curriculums, tough tests, and conceptually difficult material.

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