AP
AP Chemistry
A clear, structured course to help you understand key concepts, build exam…
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Unit 11. Atomic Structure and Properties16 lessonsUnit 22. Compound Structure and Properties13 lessonsUnit 33. Properties of Substances and Mixtures20 lessonsUnit 44. Chemical Reactions12 lessonsUnit 55. Kinetics14 lessonsUnit 66. Thermochemistry14 lessonsUnit 77. Equilibrium19 lessonsUnit 88. Acids and Bases16 lessonsUnit 99. Thermodynamics and Electrochemistry15 lessons
✅ 100% free📱 Phone & laptop🧠 Short, clear lessons🎯 Instant feedback🧪 Virtual lab📈 Progress you can see👪 Easy for parents to follow📝 Exam-style practice✅ 100% free📱 Phone & laptop🧠 Short, clear lessons🎯 Instant feedback🧪 Virtual lab📈 Progress you can see👪 Easy for parents to follow📝 Exam-style practice
1Atomic Structure and Properties
16 lessons
- 1.1Elements & MixturesFree preview12 minStudy
- 1.2Spectroscopy12 minStudy
- 1.3Atoms & Electrons12 minStudy
- 1.4Moles & Molar Mass12 minStudy
- 1.5Periodic Trends12 minStudy
- 1.6Mass Spectra of Elements12 minStudy
- 1.7Moles and Molar Mass5 minStudy
- Moles and Molar Mass - Check yourself
- 1.8Mass Spectra of Elements5 minStudy
- Mass Spectra of Elements - Check yourself
- 1.9Elemental Composition of Pure Substances5 minStudy
- Elemental Composition of Pure Substances - Check yourself
- 1.10Elements & Mixtures12 minStudy
- Elements & Mixtures - Check yourself
- 1.11Composition of Mixtures5 minStudy
- Composition of Mixtures - Check yourself
- 1.12Atoms & Electrons12 minStudy
- Atoms & Electrons - Check yourself
- 1.13Atomic Structure and Electron Configuration5 minStudy
- Atomic Structure and Electron Configuration - Check yourselfUnit 1 · Atomic Structure and Properties - Unit review
- 1.14Photoelectron Spectroscopy5 minStudy
- Photoelectron Spectroscopy - Check yourself
- 1.15Periodic Trends5 minStudy
- Periodic Trends - Check yourself
- 1.16Valence Electrons and Ionic Compounds5 minStudy
- Valence Electrons and Ionic Compounds - Check yourself
2Compound Structure and Properties
13 lessons
- 2.1Ionic Crystals & Metals12 minStudy
- 2.2VSEPR & Hybridization12 minStudy
- 2.3Lewis Diagrams12 minStudy
- 2.4Chemical Bonding12 minStudy
- 2.5Types of Chemical Bonds5 minStudy
- Types of Chemical Bonds - Check yourself
- 2.6Chemical Bonding12 minStudy
- Chemical Bonding - Check yourself
- 2.7Intramolecular Force and Potential Energy5 minStudy
- Intramolecular Force and Potential Energy - Check yourself
- 2.8Ionic Crystals & Metals12 minStudy
- Ionic Crystals & Metals - Check yourself
- 2.9Structure of Ionic Solids5 minStudy
- Structure of Ionic Solids - Check yourself
- 2.10Structure of Metals and Alloys5 minStudy
- Structure of Metals and Alloys - Check yourself
- 2.11Lewis Diagrams5 minStudy
- Lewis Diagrams - Check yourself
- 2.12Resonance and Formal Charge5 minStudy
- Resonance and Formal Charge - Check yourself
- 2.13VSEPR and Hybridization5 minStudy
- VSEPR and Hybridization - Check yourself
- Unit practiceUnit 2 · Compound Structure and Properties - Unit review
3Properties of Substances and Mixtures
20 lessons
- 3.1Intermolecular & Interparticle Forces12 minStudy
- 3.2Solutions & Mixtures12 minStudy
- 3.3Properties of Solids, Liquids & Gases12 minStudy
- 3.4Gas Laws12 minStudy
- 3.5Intermolecular and Interparticle Forces5 minStudy
- Intermolecular and Interparticle Forces - Check yourself
- 3.6Properties of Solids5 minStudy
- Properties of Solids - Check yourself
- 3.7Solids, Liquids, and Gases5 minStudy
- Solids, Liquids, and Gases - Check yourself
- 3.8Gas Laws12 minStudy
- Gas Laws - Check yourself
- 3.9Ideal Gas Law5 minStudy
- Ideal Gas Law - Check yourself
- 3.10Kinetic Molecular Theory5 minStudy
- Kinetic Molecular Theory - Check yourself
- 3.11Deviation from Ideal Gas Law5 minStudy
- Deviation from Ideal Gas Law - Check yourself
- 3.12Solutions and Mixtures5 minStudy
- Solutions and Mixtures - Check yourself
- 3.13Where energy goes — Question Bank (Cambridge)12 minStudy
- 3.14Particles on the move — Question Bank (Cambridge)12 minStudy
- 3.15Representations of Solutions5 minStudy
- Representations of Solutions - Check yourself
- 3.16Separation of Solutions and Mixtures5 minStudy
- Separation of Solutions and Mixtures - Check yourself
- 3.17Solubility5 minStudy
- Solubility - Check yourself
- 3.18Spectroscopy and the Electromagnetic Spectrum5 minStudy
- Spectroscopy and the Electromagnetic Spectrum - Check yours…
- 3.19Properties of Photons5 minStudy
- Properties of Photons - Check yourself
- 3.20Beer-Lambert Law5 minStudy
- Beer-Lambert Law - Check yourself
- Unit practiceUnit 3 · Properties of Substances and Mixtures - Unit review
4Chemical Reactions
12 lessons
- 4.1Stoichiometry12 minStudy
- 4.2Chemical Changes12 minStudy
- 4.3Types of Chemical Reactions12 minStudy
- Unit 4 · Chemical Reactions - Unit review
- 4.4Introduction for Reactions5 minStudy
- Introduction for Reactions - Check yourself
- 4.5Net Ionic Equations5 minStudy
- Net Ionic Equations - Check yourself
- 4.6Representations of Reactions5 minStudy
- Representations of Reactions - Check yourself
- 4.7Physical and Chemical Changes5 minStudy
- Physical and Chemical Changes - Check yourself
- 4.8Stoichiometry5 minStudy
- Stoichiometry - Check yourself
- 4.9Introduction to Titration5 minStudy
- Introduction to Titration - Check yourself
- 4.10Types of Chemical Reactions5 minStudy
- Types of Chemical Reactions - Check yourself
- 4.11Introduction to Acid-Base Reactions5 minStudy
- Introduction to Acid-Base Reactions - Check yourself
- 4.12Oxidation-Reduction (Redox) Reactions5 minStudy
- Oxidation-Reduction (Redox) Reactions - Check yourself
5Kinetics
14 lessons
- 5.1Elementary Reactions & Collisions12 minStudy
- 5.2Reaction Mechanisms12 minStudy
- 5.3Reaction Rates12 minStudy
- 5.4Reaction Rates5 minStudy
- Reaction Rates - Check yourself
- 5.5Introduction to Rate Law5 minStudy
- Introduction to Rate Law - Check yourself
- 5.6Concentration Changes Over Time5 minStudy
- Concentration Changes Over Time - Check yourself
- 5.7Elementary Reactions5 minStudy
- Elementary Reactions - Check yourself
- 5.8Collision Model5 minStudy
- Collision Model - Check yourself
- 5.9Reaction Energy Profile5 minStudy
- Reaction Energy Profile - Check yourself
- 5.10Introduction to Reaction Mechanisms5 minStudy
- Introduction to Reaction Mechanisms - Check yourself
- 5.11Reaction Mechanism and Rate Law5 minStudy
- Reaction Mechanism and Rate Law - Check yourself
- 5.12Pre-Equilibrium Approximation5 minStudy
- Pre-Equilibrium Approximation - Check yourself
- 5.13Multistep Reaction Energy Profile5 minStudy
- Multistep Reaction Energy Profile - Check yourself
- 5.14Catalysis5 minStudy
- Catalysis - Check yourselfKinetics - Key terms
6Thermochemistry
14 lessons
- 6.1Calorimetry12 minStudy
- 6.2Enthalpy Changes12 minStudy
- 6.3Chemical Energy12 minStudy
- 6.4Endothermic and Exothermic Processes5 minStudy
- Endothermic and Exothermic Processes - Check yourself
- 6.5Chemical Energy12 minStudy
- Chemical Energy - Check yourself
- 6.6Energy Diagrams5 minStudy
- Energy Diagrams - Check yourself
- 6.7Heat Transfer and Thermal Equilibrium5 minStudy
- Heat Transfer and Thermal Equilibrium - Check yourself
- 6.8Enthalpy Changes12 minStudy
- 6.9Heat Capacity and Calorimetry5 minStudy
- Heat Capacity and Calorimetry - Check yourself
- 6.10Energy of Phase Changes5 minStudy
- Energy of Phase Changes - Check yourself
- 6.11Introduction to Enthalpy of Reaction5 minStudy
- Introduction to Enthalpy of Reaction - Check yourself
- 6.12Bond Enthalpies5 minStudy
- Bond Enthalpies - Check yourself
- 6.13Enthalpy of Formation5 minStudy
- Enthalpy of Formation - Check yourself
- 6.14Hess's Law5 minStudy
- Hess's Law - Check yourself
- Unit practiceUnit 6 · Thermochemistry - Unit review
7Equilibrium
19 lessons
- 7.1Le Châtelier’s Principle12 minStudy
- 7.2Equilibrium Constants12 minStudy
- 7.3Equilibrium12 minStudy
- Unit 7 · Equilibrium - Unit review
- 7.4Solubility Equilibria12 minStudy
- 7.5Equilibrium Representation & Calculations12 minStudy
- 7.6Introduction to Equilibrium5 minStudy
- Introduction to Equilibrium - Check yourself
- 7.7Direction of Reversible Reactions5 minStudy
- Direction of Reversible Reactions - Check yourself
- 7.8Equilibrium Constants12 minStudy
- Equilibrium Constants - Check yourself
- 7.9Reaction Quotient and Equilibrium Constant5 minStudy
- Reaction Quotient and Equilibrium Constant - Check yourself
- 7.10Le Châtelier’s Principle12 minStudy
- Le Châtelier’s Principle - Check yourself
- 7.11Calculating the Equilibrium Constant5 minStudy
- Calculating the Equilibrium Constant - Check yourself
- 7.12Magnitude of the Equilibrium Constant5 minStudy
- Magnitude of the Equilibrium Constant - Check yourself
- 7.13Properties of the Equilibrium Constant5 minStudy
- Properties of the Equilibrium Constant - Check yourself
- 7.14Calculating Equilibrium Concentrations5 minStudy
- Calculating Equilibrium Concentrations - Check yourself
- 7.15Representations of Equilibrium5 minStudy
- Representations of Equilibrium - Check yourself
- 7.16Introduction to Le Chtelier's Principle5 minStudy
- Introduction to Le Chtelier's Principle - Check yourself
- 7.17Reaction Quotient and Le Chtelier's Principle5 minStudy
- Reaction Quotient and Le Chtelier's Principle - Check yours…
- 7.18Introduction to Solubility Equilibria5 minStudy
- Introduction to Solubility Equilibria - Check yourself
- 7.19Common-Ion Effect5 minStudy
- Common-Ion Effect - Check yourself
8Acids and Bases
16 lessons
- 8.1Buffers12 minStudy
- 8.2Acid-Base Titrations12 minStudy
- 8.3Brønsted-Lowry Acids & Bases12 minStudy
- 8.4pH & pOH12 minStudy
- 8.5Acids & Bases12 minStudy
- 8.6Introduction to Acids and Bases5 minStudy
- Introduction to Acids and Bases - Check yourself
- 8.7pH and pOH of Strong Acids and Bases5 minStudy
- pH and pOH of Strong Acids and Bases - Check yourself
- 8.8Weak Acid and Base Equilibria5 minStudy
- Weak Acid and Base Equilibria - Check yourself
- 8.9Acid-Base Reactions and Buffers5 minStudy
- Acid-Base Reactions and Buffers - Check yourself
- 8.10Acid-Base Titrations5 minStudy
- Acid-Base Titrations - Check yourselfAcid-Base Titrations - Check yourself
- 8.11Molecular Structure of Acids and Bases5 minStudy
- Molecular Structure of Acids and Bases - Check yourself
- 8.12pH and pKa5 minStudy
- pH and pKa - Check yourself
- 8.13Properties of Buffers5 minStudy
- Properties of Buffers - Check yourself
- 8.14HendersonHasselbalch Equation5 minStudy
- HendersonHasselbalch Equation - Check yourself
- 8.15Buffer Capacity5 minStudy
- Buffer Capacity - Check yourself
- 8.16pH and Solubility5 minStudy
- pH and Solubility - Check yourself
9Thermodynamics and Electrochemistry
15 lessons
- 9.1Free Energy12 minStudy
- 9.2Electrochemical Cells12 minStudy
- 9.3Entropy12 minStudy
- 9.4Introduction to Entropy5 minStudy
- Introduction to Entropy - Check yourself
- 9.5Absolute Entropy and Entropy Change5 minStudy
- Absolute Entropy and Entropy Change - Check yourself
- 9.6Gibbs Free Energy and Thermodynamic Favorability5 minStudy
- Gibbs Free Energy and Thermodynamic Favorability - Check yo…
- 9.7Electrochemical Cells12 minStudy
- 9.8Thermodynamic and Kinetic Control5 minStudy
- Thermodynamic and Kinetic Control - Check yourself
- 9.9Free Energy and Equilibrium5 minStudy
- Free Energy and Equilibrium - Check yourself
- 9.10Free Energy of Dissolution5 minStudy
- Free Energy of Dissolution - Check yourself
- 9.11Coupled Reactions5 minStudy
- Coupled Reactions - Check yourself
- 9.12Galvanic (Voltaic) and Electrolytic Cells5 minStudy
- Galvanic (Voltaic) and Electrolytic Cells - Check yourself
- 9.13Cell Potential and Free Energy5 minStudy
- Cell Potential and Free Energy - Check yourself
- 9.14Cell Potential Under Nonstandard Conditions5 minStudy
- Cell Potential Under Nonstandard Conditions - Check yourself
- 9.15Electrolysis and Faraday's Law5 minStudy
- Electrolysis and Faraday's Law - Check yourself
- Unit practiceUnit 9 · Thermodynamics and Electrochemistry - Unit review
Welcome to
AP Chemistry
Here is how to get the most from this course.
How this course teaches
Every unit follows the AP Chemistry specification in order.
- Key ideas
- Core content
- Processes
- Summary
- Self-check
1Learn
Concise notes with diagrams and the exact keywords examiners look for.
2Check
Short questions at the end of every lesson.
3Practise
Marked topic quizzes and past-paper style questions for each unit.
4Master
Summaries and comparison tables that pull each unit together.