# AP Chemistry tutor: live classes, unit by unit

Source: https://tutix.ai/programs/ap-chemistry  
Updated: 2026-10-21

**The short answer.** AP Chemistry on Tutix is a ready-made series of live classes with an AI tutor. It covers all 9 units and 91 topics, in five levels from 5 hours to the full 65. It ends with 2 full practice papers (67 questions each). You can start on the free plan.

- Follows the College Board AP course description
- 9 units and 91 topics, taught in 15-minute lessons
- Five levels, 5 to 65 hours of teaching
- 2 full practice papers, 106 marks each
- Starts on the free plan (45 live minutes a month)

## What AP Chemistry covers

AP Chemistry teaches students to explain chemical phenomena using models, evidence, and quantitative reasoning. Students study matter and its properties, chemical reactions, and the principles governing chemical and physical change.

AP Chemistry is a College Board course on atomic structure, compound structure and properties, the properties of substances and mixtures, reactions, kinetics, thermochemistry, equilibrium, acids and bases, and thermodynamics and electrochemistry.

### Unit 1: Atomic Structure and Properties (7–9%)

Topics: 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.

### Unit 2: Compound Structure and Properties (7–9%)

Topics: 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.

### Unit 3: Properties of Substances and Mixtures (18–22%)

Topics: Intermolecular and Interparticle Forces; Properties of Solids; Solids, Liquids, and Gases; Ideal Gas Law; Kinetic Molecular Theory; Deviation from Ideal Gas Law; Solutions and Mixtures; Representations of Solutions; Separation of Solutions and Mixtures; Solubility; Spectroscopy and the Electromagnetic Spectrum; Properties of Photons; Beer-Lambert Law.

### Unit 4: Chemical Reactions (7–9%)

Topics: Introduction for Reactions; Net Ionic Equations; Representations of Reactions; Physical and Chemical Changes; Stoichiometry; Introduction to Titration; Types of Chemical Reactions; Introduction to Acid-Base Reactions; Oxidation-Reduction (Redox) Reactions.

### Unit 5: Kinetics (7–9%)

Topics: Reaction Rates; Introduction to Rate Law; Concentration Changes Over Time; Elementary Reactions; Collision Model; Reaction Energy Profile; Introduction to Reaction Mechanisms; Reaction Mechanism and Rate Law; Pre-Equilibrium Approximation; Multistep Reaction Energy Profile; Catalysis.

### Unit 6: Thermochemistry (7–9%)

Topics: Endothermic and Exothermic Processes; Energy Diagrams; Heat Transfer and Thermal Equilibrium; Heat Capacity and Calorimetry; Energy of Phase Changes; Introduction to Enthalpy of Reaction; Bond Enthalpies; Enthalpy of Formation; Hess’s Law.

### Unit 7: Equilibrium (7–9%)

Topics: Introduction to Equilibrium; Direction of Reversible Reactions; Reaction Quotient and Equilibrium Constant; Calculating the Equilibrium Constant; Magnitude of the Equilibrium Constant; Properties of the Equilibrium Constant; Calculating Equilibrium Concentrations; Representations of Equilibrium; Introduction to Le Châtelier’s Principle; Reaction Quotient and Le Châtelier’s Principle; Introduction to Solubility Equilibria; Common-Ion Effect.

### Unit 8: Acids and Bases (11–15%)

Topics: Introduction to Acids and Bases; pH and pOH of Strong Acids and Bases; Weak Acid and Base Equilibria; Acid-Base Reactions and Buf fers; Acid-Base Titrations; Molecular Structure of Acids and Bases; pH and pKa; Properties of Buf fers; Henderson- Hasselbalch Equation; Buffer Capacity; pH and Solubility.

### Unit 9: Thermodynamics and Electrochemistry (7–9%)

Topics: Introduction to Entropy; Absolute Entropy and Entropy Change; Gibbs Free Energy and Thermodynamic Favorability; Thermodynamic and Kinetic Control; Free Energy and Equilibrium; Free Energy of Dissolution; Coupled Reactions; Galvanic (Voltaic) and Electrolytic Cells; Cell Potential and Free Energy; Cell Potential Under Nonstandard Conditions; Electrolysis and Faraday’s Law.

## A class in AP Chemistry, opened

Every class works like this. The tutor asks, you answer in your own words, and it reads what you wrote while you are still in the room, then tells you what is missing and asks you to try again.

A class, opened. A sample written to show how a class sounds (not a real learner); the scores show how the exam would credit each answer.

> **Unit 4 · Stoichiometry.** Question: How many grams of water form when 4.0 g of H_2 burns completely? 2H_2 + O_2 → 2H_2O
> The student wrote: 18 g (the exam would credit 1 of 3)
> The tutor: The molar mass of water is right, but 18 g is one mole of it. Start from the moles of H_2: 4.0 g divided by 2.0 g/mol. Then read the ratio off the equation.
> The student then wrote: 4.0 ÷ 2.0 = 2.0 mol H_2, so 2.0 mol H_2O, so 2.0 × 18 = 36 g (the exam would credit 3 of 3)

## How the AP Chemistry exam is built

The 2027 exam is on Thursday, May 6, in the afternoon session. It has 60 multiple-choice questions in 90 minutes and 7 free-response questions in 105 minutes (three long questions of 10 points and four short questions of 4 points), each section worth half of the score. A scientific or graphing calculator is recommended on both sections, and a periodic table and formula sheet are provided.

| Exam section | Detail |
| --- | --- |
| Multiple-choice | 60 questions · 90 min · 50% of the score; Calculator allowed |
| Free-response | 7 questions · 105 min · 50% of the score; Calculator allowed |

## How students score on AP Chemistry

How students scored in 2026 (share of students at each AP score):

| Score | Share of students |
| --- | --- |
| 5 | 15% |
| 4 | 31% |
| 3 | 30% |
| 2 | 18% |
| 1 | 6% |

The share of students scoring 3 or higher on AP Chemistry was 51.3% in 2021 and 75% in 2026. The College Board reviews each exam's score standards every five to ten years, so a change from one year to the next can reflect a new standard as well as how students did. AP pass rates for every exam shows the whole table.

| Year | 5 | 4 | 3 | 2 | 1 | 3 or higher | Students | Mean score |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2026 | 15% | 31% | 30% | 18% | 6% | 75% | n/a | n/a |
| 2025 | 17.9% | 28.6% | 31.4% | 15.9% | 6.2% | 77.9% | 168,833 | 3.36 |
| 2024 | 17.9% | 27.4% | 30.3% | 16.9% | 7.5% | 75.6% | 151,121 | 3.31 |
| 2023 | 16.0% | 27.1% | 32.0% | 16.9% | 8.0% | 75.1% | 139,448 | 3.26 |
| 2022 | 12.5% | 17.0% | 24.5% | 23.6% | 22.5% | 54.0% | 124,780 | 2.73 |
| 2021 | 11.2% | 16.4% | 23.7% | 24.7% | 23.9% | 51.3% | 134,316 | 2.66 |

## How long does AP Chemistry take?

Every level covers the whole syllabus. A deeper level only adds classes, so you can go deeper later and keep everything you have done. Hours are hours of teaching, counted in classes of 45 or 60 minutes.

| Level | Hours | Classes of 45 min |
| --- | --- | --- |
| Short | 5 | 7 |
| Standard | 30.8 | 41 |
| In depth | 48.8 | 65 |
| Extended | 60.5 | 81 |
| Full syllabus | 65 | 87 |

The Programs page draws AP Chemistry beside the other eleven programs on one hours scale, with what a pass costs at each level.

## Questions

**How many hours of teaching does AP Chemistry take on Tutix?**

The Standard level takes 30.8 hours: 41 classes of 45 minutes, or 31 of 60. The Full syllabus level takes 65 hours (87 classes of 45 minutes). The Short level is 5 hours. Every level covers the whole syllabus; deeper levels add classes.

**What does the AP Chemistry exam look like?**

As the board publishes it, the exam has these parts: Multiple-choice (60 questions, 90 minutes); Free-response (7 questions, 105 minutes). Check your board's current specification for the exact format of the year you sit it.

**Which AP Chemistry units carry the most weight?**

The heaviest units are Properties of Substances and Mixtures (18–22%); Acids and Bases (11–15%); Atomic Structure and Properties (7–9%), measured as a share of the multiple-choice section.

**Are there practice papers for AP Chemistry?**

Yes. The Full syllabus level includes 2 full practice papers written for Tutix in the style of the real exam (67 questions and 106 marks each). You can sit them as long homework, and a class can go over them afterwards.

**Is this an official College Board AP course?**

No. Tutix is not affiliated with College Board and its AP Chemistry classes are not endorsed by College Board. The lessons and questions are Tutix's own, prepared to follow the published AP Chemistry course description, and the real exam is set and marked by College Board.

**Can I try AP Chemistry for free?**

Yes. The Free plan includes 45 live class minutes a month, about one class of the default length, and no card is needed. Pro is $15 a month for 360 live minutes (6 hours), and Pro+ is $30 a month for 900 live minutes.

**Is the AP Chemistry tutor a person?**

No. The tutor is an AI. It talks with you in real time, teaches on a whiteboard, reads your answers and remembers what each earlier class covered. A parent can set up a child's classes and choose to get a recap after each one.

**When is the AP Chemistry exam in 2027?**

AP Chemistry is on Thursday, May 6, 2027, in the afternoon session. The 2027 AP exam window runs from May 3 to May 7 and from May 10 to May 14, set by the College Board.

**What is a good AP Chemistry score?**

The College Board calls a 5 extremely well qualified, a 4 very well qualified and a 3 qualified. In 2026, 75% of students who sat AP Chemistry scored 3 or higher. What counts as good for you depends on the colleges you are aiming at.

**Does AP Chemistry count for college credit?**

It depends on the college. The College Board says many US colleges grant credit or advanced placement for scores of 3 and above, and that each college makes its own decisions about which scores it accepts. Check each college's credit policy before you rely on a score.

## Sources

- College Board: [AP Chemistry: the exam](https://apcentral.collegeboard.org/courses/ap-chemistry/exam) (accessed October 21, 2026)
- College Board: [AP Chemistry: the course](https://apstudents.collegeboard.org/courses/ap-chemistry) (accessed October 21, 2026)
- College Board: [AP exam dates](https://apcentral.collegeboard.org/exam-administration-ordering-scores/exam-dates) (accessed October 21, 2026)
- College Board: [AP score distributions, 2026](https://apstudents.collegeboard.org/about-ap-scores/score-distributions) (2026 results)
- College Board: [The AP score scale](https://apstudents.collegeboard.org/about-ap-scores/ap-score-scale-table) (accessed October 21, 2026)
- College Board: [Getting credit and placement](https://apstudents.collegeboard.org/getting-credit-placement) (accessed October 21, 2026)
- College Board: [AP score distributions, by year (2021 to 2026)](https://apstudents.collegeboard.org/about-ap-scores/score-distributions) (2021 to 2026 results)

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