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AP Chemistry

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What is AP Chemistry? Why study it?

AP Chemistry is an advanced course that delves into the fundamental concepts of chemistry, including atomic structure, chemical reactions, thermodynamics, and kinetics. It’s designed for students who have a strong interest in the sciences and want to challenge themselves with college-level material. Studying AP Chemistry helps students develop a deep understanding of the chemical principles that govern the natural world, and it builds critical problem-solving and analytical skills. This course is particularly beneficial for those planning to pursue careers in fields like engineering, medicine, environmental science, or any area that requires a solid foundation in chemistry.

Your track record in the AP Chemistry course is one of the key factors that will determine your college acceptances.
Work with certified AP Chemistry Examiners to get that 7/7.
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AP Chemistry Syllabus: Topics + Overview

The AP Chemistry syllabus covers a wide range of topics, including atomic structure, molecular bonding, chemical reactions, thermodynamics, and kinetics. It emphasizes both theoretical understanding and practical laboratory skills, with a significant portion of the course dedicated to hands-on experiments and data analysis. The course prepares students for the AP exam by developing their ability to solve complex problems, interpret chemical data, and apply concepts to real-world scenarios.

Topic

Content

Atomic Structure and Properties

Recommended Learning 
9-10 Class Periods

Content Description: You’ll learn about the composition of atoms and ways scientists measure and categorize these building blocks of matter.

Prior Knowledge Required: Understanding of the basic structure of an atom, including the roles of protons, neutrons, and electrons, and have a foundational grasp of the periodic table, particularly electron configurations.

Compound Structure and Properties

Recommended Learning 
12-13 Class Periods

Content Description: You’ll discover the range of chemical bonds and how their structure can affect the properties of the molecules created.

Prior Knowledge Required: Familiarity with the types of chemical bonds (ionic and covalent), the ability to draw Lewis structures, and an understanding of molecular geometry using VSEPR theory.

Properties of Substances and Mixtures

Recommended Learning 
14-15 Class Periods

Content Description: You’ll explore how atoms come together to create solids, liquids and gases, and how forces between particles govern the properties of everything around you.

Prior Knowledge Required: Know the different states of matter (solid, liquid, gas) and have a basic understanding of intermolecular forces and how they influence the physical properties of substances.

Chemical Reactions

Recommended Learning 
14-15 Class Periods

Content Description: You’ll learn how to differentiate physical and chemical processes, and how to measure and express chemical reactions via chemical equations.

Prior Knowledge Required: Comfortable with balancing chemical equations, recognizing types of chemical reactions (synthesis, decomposition, single replacement, etc.), and performing basic stoichiometric calculations.

Kinetics

Recommended Learning 
13-14 Class Periods

Content Description: You’ll explore various methods to observe changes that occur during a chemical reaction, the factors that influence reaction rate, and how it relates to a series of elementary reactions.

Prior Knowledge Required: Understand the factors that affect reaction rates, such as concentration, temperature, and catalysts, as well as have a basic familiarity with rate laws and the concept of reaction mechanisms.

Thermochemistry

Recommended Learning 
10-11 Class Periods

Content Description: You’ll learn about energy changes in chemical reactions and how a transfer of energy can change a substance’s physical qualities.

Prior Knowledge Required: The basics of energy transfer in chemical reactions, including concepts like enthalpy and the conservation of energy, and be able to interpret and apply thermochemical equations.

Equilibrium

Recommended Learning 
13-15 Class Periods

Content Description: You’ll learn about how chemical reactions change over time, what causes substances to reach equilibrium, and how systems react when that equilibrium is disturbed.

Prior Knowledge Required: Understand dynamic equilibrium, Le Chatelier’s principle, and how to express and manipulate equilibrium constants in chemical reactions.

Acids and Bases

Recommended Learning 
14-16 Class Periods

Content Description: You’ll learn more about pH, the qualities and properties of acids and bases, and how they interact in chemical reactions.

Prior Knowledge Required: Familiarity with the pH scale, the properties of strong and weak acids and bases, and basic calculations involving pH, pKa, and pKb.

Thermodynamics and Electrochemistry

Recommended Learning 
10-13 Class Periods

Content Description: You’ll be introduced to the concept of “thermodynamic favorability’ for reactions, meaning how likely they are to occur given energy changes and environmental factors, and how chemical reactions can be used to generate electricity.

Prior Knowledge Required: Understand the concepts of enthalpy, entropy, and Gibbs free energy, and how these relate to the spontaneity of reactions, as well as the basics of redox reactions and how chemical reactions can generate electricity.

Download full sub-topic list for the IB DP Math AI SL and HL

Download Syllabus

AP Calc AB Exams and Past Papers: Overview

Section 1 of 2

1 exam - 2 sections

50% of the final exam grade

Time Alloted:
1 hour and 30 minutes (90 minutes)

Format:
This section consists of 60 multiple choice questions, including individual, single questions as well as sets of questions that refer to the same diagram or data presentation.

Content:
Questions will test students ability to:
Explain, analyze, and interpret models and representations of chemical properties or phenomena
Design experiments and procedures to test a prediction or theory
Solve problems using mathematical relationships
Make or justify a scientific claim and support it with evidence and/or reasoning
A scientific or graphing calculator is recommended for use on Section I

Example Question

Which of the following experimental procedures is used to separate two substances by taking advantage of their differing boiling points? Titration Distillation Filtration Decantation Hydration”

Section 2 of 2

1 exam - 2 sections

50% of the final exam grade

Time Alloted:
1 hour and 45 minutes (105 minutes)

Format:
The free-response section includes three long, multipart questions (worth 10 points each) and four short-answer, multipart questions (worth 4 points each).

Content:
Questions will test students ability to:
Explain, analyze, and interpret models and representations of chemical properties or phenomena
Design experiments and procedures to test a prediction or theory
Represent data and chemical phenomena with graphs and diagrams
Solve problems using mathematical relationships
Make or justify a scientific claim and support it with evidence and/or reasoning
A scientific or graphing calculator is recommended for use on Section II.

Example Question

“Gavin’s parents took him to his favorite science museum, and he explored all of the exhibits. One of the interactive exhibits featured glass marbles. He grabbed a large marble and tried to bounce it on the ground. At one point during the visit, he became separated from his parents, and it took a few minutes for them to find him. Later that night, he drew a colorful picture of the exhibits at the museum. The next day, Gavin brought his picture with him to preschool. While his grandmother drove, Gavin talked to her about the picture. Part A • Explain how Jean Piaget’s concept of assimilation could relate to Gavin’s experience with the glass marble. • Explain how egocentrism could relate to how Gavin interacted with his grandmother in the car. • Explain how avoidant attachment could relate to Gavin when he was separated from his parents. Part B Explain how each of the following terms could relate to Gavin in this scenario. • Serial position effect • Motor cortex • Cognitive map • Cones in the retina”

Download all the free past papers

Download Free Test Paper

AP English Language and Composition Exam Topic Weights

The AP Chemistry exam covers a range of topics within the broader categories of atomic and molecular structure, chemical reactions, kinetics, equilibrium and thermodynamics. Here is the breakdown of the topic weights for the exam:

Topic

Exam Weights

Question Areas

Atomic Structure and Properties

7-9%

  • Moles and molar mass
  • Mass spectra of elements
  • Elemental composition of pure substances
  • Composition of mixtures
  • Atomic structure and electron configuration
  • Photoelectron spectroscopy
  • Periodic trends
  • Valence electrons and ionic compounds

Compound Structure and Properties

7-9%

  • Types of chemical bonds
  • Intramolecular force and potential energy
  • Structure of ionic solids
  • Structure of metals and alloys
  • Lewis diagrams
  • Resonance and formal charge
  • VSEPR and hybridization

Properties of Substances and Mixtures

18-22%

  • Intermolecular forces
  • Solids, liquids, and gases
  • Kinetic molecular theory
  • Solutions and mixtures
  • Properties of photons
  • Spectroscopy

Chemical Reactions

7-9%

  • Introduction for reactions
  • Net ionic equations
  • Representations of reactions
  • Physical and chemical changes
  • Stoichiometry
  • Types of chemical reactions

Kinetics

7-9%

  • Reaction rate
  • Introduction to rate law
  • Elementary reactions
  • Collision model
  • Introduction to reaction mechanisms
  • Multistep reaction energy profile
  • Catalysis

Thermochemistry

7-9%

  • Endothermic and exothermic processes
  • Heat transfer and thermal equilibrium
  • Heat capacity and calorimetry
  • Energy of phase changes
  • Introduction to enthalpy of reaction
  • Enthalpy of formation
  • Hess’s law

Equilibrium

7-9%

  • Introduction to equilibrium
  • Calculating the equilibrium constant
  • Calculating equilibrium concentrations
  • Introduction to Le Châtelier’s principle
  • Introduction to solubility equilibria

Acids and Bases

11-15%

  • Introduction to acids and bases
  • pH and pOH of strong acids and bases
  • Acid-base reactions and buffers
  • Molecular structure of acids and bases
  • pH and pKa
  • Properties of buffers
  • pH and solubility

Thermodynamics and Electrochemistry

7-9%

  • Introduction to entropy
  • Gibbs free energy and thermodynamic favorability
  • Thermodynamic and kinetic control
  • Free energy and equilibrium
  • Free energy of dissolution
  • Galvanic (voltaic) and electrolytic cells
  • Electrolysis and Faraday’s laws

Atomic Structure and Properties

Topic

Exam Weights

7-9%

Question Areas

  • Moles and molar mass
  • Mass spectra of elements
  • Elemental composition of pure substances
  • Composition of mixtures
  • Atomic structure and electron configuration
  • Photoelectron spectroscopy
  • Periodic trends
  • Valence electrons and ionic compounds

Compound Structure and Properties

Topic

Exam Weights

7-9%

Question Areas

  • Types of chemical bonds
  • Intramolecular force and potential energy
  • Structure of ionic solids
  • Structure of metals and alloys
  • Lewis diagrams
  • Resonance and formal charge
  • VSEPR and hybridization

Properties of Substances and Mixtures

Topic

Exam Weights

18-22%

Question Areas

  • Intermolecular forces
  • Solids, liquids, and gases
  • Kinetic molecular theory
  • Solutions and mixtures
  • Properties of photons
  • Spectroscopy

Chemical Reactions

Topic

Exam Weights

7-9%

Question Areas

  • Introduction for reactions
  • Net ionic equations
  • Representations of reactions
  • Physical and chemical changes
  • Stoichiometry
  • Types of chemical reactions

Kinetics

Topic

Exam Weights

7-9%

Question Areas

  • Reaction rate
  • Introduction to rate law
  • Elementary reactions
  • Collision model
  • Introduction to reaction mechanisms
  • Multistep reaction energy profile
  • Catalysis

Thermochemistry

Topic

Exam Weights

7-9%

Question Areas

  • Endothermic and exothermic processes
  • Heat transfer and thermal equilibrium
  • Heat capacity and calorimetry
  • Energy of phase changes
  • Introduction to enthalpy of reaction
  • Enthalpy of formation
  • Hess’s law

Equilibrium

Topic

Exam Weights

7-9%

Question Areas

  • Introduction to equilibrium
  • Calculating the equilibrium constant
  • Calculating equilibrium concentrations
  • Introduction to Le Châtelier’s principle
  • Introduction to solubility equilibria

Acids and Bases

Topic

Exam Weights

11-15%

Question Areas

  • Introduction to acids and bases
  • pH and pOH of strong acids and bases
  • Acid-base reactions and buffers
  • Molecular structure of acids and bases
  • pH and pKa
  • Properties of buffers
  • pH and solubility

Thermodynamics and Electrochemistry

Topic

Exam Weights

7-9%

Question Areas

  • Introduction to entropy
  • Gibbs free energy and thermodynamic favorability
  • Thermodynamic and kinetic control
  • Free energy and equilibrium
  • Free energy of dissolution
  • Galvanic (voltaic) and electrolytic cells
  • Electrolysis and Faraday’s laws

Understand The AP Scoring System

The AP scores are primarily used to determine a student’s readiness to receive college credit or placement in advanced courses, rather than directly reflecting traditional school grades. The criteria for achieving these scores typically involve performance on both multiple-choice questions and free-response items, assessing a combination of knowledge, application, and analytical skills.

AP Score

Description

Grade Equivalent

IB Equivalent

GPA Equivalent

Criteria

5/5

Extremely well qualified

A,A+

7/7

4.0

Shows thorough knowledge and understanding

4/5

Well qualified

A- to B

6/7

3.7

3/5

Qualified

B- to C

5/7

3.0

2/5

Possibly qualified

C to D

4/7

2.0

1/5

No credit

F

3 or below

1.0

AP Score

5/5

Description

Extremely well qualified

Grade Equivalent

A,A+

IB Equivalent

7/7

GPA Equivalent

4.0

Criteria

Shows thorough knowledge and understanding

AP Score

4/5

Description

Well qualified

Grade Equivalent

A- to B

IB Equivalent

6/7

GPA Equivalent

3.7

Criteria

AP Score

3/5

Description

Qualified

Grade Equivalent

B- to C

IB Equivalent

5/7

GPA Equivalent

3.0

Criteria

AP Score

2/5

Description

Possibly qualified

Grade Equivalent

C to D

IB Equivalent

4/7

GPA Equivalent

2.0

Criteria

AP Score

1/5

Description

No credit

Grade Equivalent

F

IB Equivalent

3 or below

GPA Equivalent

1.0

Criteria

Is AP Chemistry Difficult?

AP Chemistry is often regarded as one of the more challenging AP courses due to its rigorous content and the level of critical thinking required. The course demands a solid understanding of complex concepts like thermodynamics, chemical equilibria, and kinetics, as well as proficiency in math skills, particularly algebra. Additionally, the lab component requires precision and a deep understanding of experimental procedures. However, with strong study habits, a good foundation in basic chemistry, and a commitment to consistent practice, students can succeed in AP Chemistry and find it a rewarding experience.

AP Chemistry

Standard Level
Higher Level

Ascend Now Examiner Tips

Master the Periodic Trends

“Understanding periodic trends is crucial for predicting chemical behavior. Make sure you’re comfortable with concepts like electronegativity, atomic radius, and ionization energy..”

Nadia

AP Tutor

15+ years experience teaching Chemistry

Be Thorough with Lab Work

“The lab component is not just about getting the right results; it’s about understanding the process. Make sure you can explain your methods, analyze your data, and discuss any sources of error.”

Jesse

AP Tutor

14+ years experience teaching Chemistry

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