The Course

AP Chemistry

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AP Chemistry Updates for 2024-25

We’re updating AP Chemistry for the 2024-25 school year.

Course Overview

AP Chemistry is an introductory college-level chemistry course. Students cultivate their understanding of chemistry through inquiry-based lab investigations as they explore the four Big Ideas: scale, proportion, and quantity; structure and properties of substances; transformations; and energy.

Course and Exam Description

Course Resources

Course Content

Based on the Understanding by Design® (Wiggins and McTighe) model, this course framework provides a clear and detailed description of the course requirements necessary for student success. The framework specifies what students must know, be able to do, and understand, with a focus on big ideas that encompass core principles and theories of the discipline. The framework also encourages instruction that prepares students for advanced chemistry coursework.

The AP Chemistry framework is organized into nine commonly taught units of study that provide one possible sequence for the course. As always, you have the flexibility to organize the course content as you like.


Exam Weighting (Multiple-Choice Section)

Unit 1: Atomic Structure and Properties


Unit 2: Molecular and Ionic Compound Structure and Properties


Unit 3: Intermolecular Forces and Properties


Unit 4: Chemical Reactions


Unit 5: Kinetics


Unit 6: Thermodynamics


Unit 7: Equilibrium


Unit 8: Acids and Bases


Unit 9: Applications of Thermodynamics


Science Practices

The AP Chemistry framework included in the CED outlines distinct skills, called science practices, that students should practice throughout the year—skills that will help them learn to think and act like chemists.



Exam Weighting (Multiple-Choice Section)

Exam Weighting (Free-Response Section)

1. Models and Representations

Describe models and representations, including across scales.



2. Question and Method

Determine scientific questions and methods.



3. Representing Data and Phenomena

Create representations or models of chemical phenomena.

Not assessed in multiple-choice section.


4. Model Analysis

Analyze and interpret models and representations on a single scale or across multiple scales.



5. Mathematical Routines

Solve problems using mathematical relationships.



6. Argumentation

Develop an explanation or scientific argument.



AP and Higher Education

Higher education professionals play a key role in developing AP courses and exams, setting credit and placement policies, and scoring student work. The AP Higher Education section features information on recruitment and admission, advising and placement, and more.

This chart shows recommended scores for granting credit, and how much credit should be awarded, for each AP course. Your students can look up credit and placement policies for colleges and universities on the AP Credit Policy Search.

Meet the AP Chemistry Development Committee

The AP Program is unique in its reliance on Development Committees. These committees, made up of an equal number of college faculty and experienced secondary AP teachers from across the country, are essential to the preparation of AP course curricula and exams.