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AP Chemistry
Master atomic structure, bonding, kinetics and thermodynamics with a live periodic table and a real-time 3D molecule lab.
Diagnostic Score calculator Score distribution Math practice Cheatsheet Reference sheet Exam-skill drills Study plan External resources
Scored lab investigations
Read a titration curve and find the concentration6 ptsFind the pressure–temperature relationship at fixed volume6 ptsUse the periodic table to predict shell structure and reactivity6 ptsRelate 3D molecular shape to bond angle and polarity6 ptsTrack shell filling and infer valence behavior6 ptsExplain how lone pairs compress bond angles6 ptsConnect ionic size ratio to lattice coordination6 ptsUse heat stress to predict an equilibrium shift6 pts
Unit 1 · 7–9%
Atomic Structure & Properties
Unit 2 · 7–9%
Molecular and Ionic Compound Structure and Properties
- Lewis Structures & Formal Charge14 min · 3 objectives
- Ionic, Covalent & Metallic Bonding13 min · 3 objectives
- VSEPR Molecular Geometry14 min · 3 objectives
- Hybridization & Polarity13 min · 3 objectives
- Resonance, Formal Charge & Bond Order14 min · 3 objectives
- Bonding Models: Sigma/Pi & Band Theory15 min · 3 objectives
Unit 3 · 18–22%
Intermolecular Forces and Properties
Unit 4 · 7–9%
Chemical Reactions
- Types of Reactions & Net Ionic Equations14 min · 3 objectives
- Stoichiometry & Limiting Reactants15 min · 3 objectives
- Oxidation–Reduction (Redox) Basics13 min · 3 objectives
- Solution Stoichiometry & Titrations15 min · 3 objectives
- Balancing Redox by Half-Reactions14 min · 3 objectives
- Advanced Stoichiometry15 min · 3 objectives
Unit 5 · 7–9%
Kinetics
- Reaction Rates & Collision Theory12 min · 3 objectives
- Rate Laws & Reaction Order14 min · 3 objectives
- Integrated Rate Laws & Half-Life14 min · 3 objectives
- Reaction Mechanisms & Catalysis13 min · 3 objectives
- Integrated Rate Laws & Graphical Analysis15 min · 3 objectives
- Arrhenius, Reaction Coordinate Diagrams & Catalysis14 min · 3 objectives
Unit 6 · 7–9%
Thermodynamics
- Energy, Heat & Enthalpy12 min · 3 objectives
- Calorimetry13 min · 3 objectives
- Hess's Law & Enthalpy of Formation14 min · 3 objectives
- Entropy & Gibbs Free Energy14 min · 3 objectives
- Calorimetry & Hess's Law — Advanced Problem-Solving15 min · 3 objectives
- Entropy & Gibbs Free Energy — Spontaneity & Temperature14 min · 3 objectives
Unit 7 · 7–9%
Equilibrium
- Dynamic Equilibrium & the Equilibrium Constant13 min · 3 objectives
- ICE Tables & Calculating K14 min · 3 objectives
- Le Châtelier's Principle12 min · 3 objectives
- Solubility Equilibria (Ksp)13 min · 3 objectives
- ICE Tables & K — Advanced15 min · 3 objectives
- Solubility Equilibria — Ksp, Common Ion & Precipitation15 min · 3 objectives
Unit 8 · 11–15%
Acids & Bases
- Acids, Bases & the pH Scale12 min · 3 objectives
- Weak Acids/Bases: Ka, Kb & pH14 min · 3 objectives
- Buffers & Henderson–Hasselbalch13 min · 3 objectives
- Titration Curves13 min · 3 objectives
- Salt Hydrolysis & Polyprotic Acids14 min · 3 objectives
- Titration Curves & Buffer Design — Advanced15 min · 3 objectives
Unit 9 · 7–9%
Applications of Thermodynamics
- Free Energy, Spontaneity & K13 min · 3 objectives
- Galvanic (Voltaic) Cells & Cell Potential14 min · 3 objectives
- Electrolysis12 min · 3 objectives
- The Nernst Equation & Nonstandard Cells12 min · 3 objectives
- Quantitative Electrochemistry: ΔG°, E°, and K15 min · 3 objectives
- The Nernst Equation & Concentration Cells14 min · 3 objectives