AP Chemistry
AP Chemistry connects particle-level models to observable chemical behavior. These notes follow the major AP units: atomic structure, bonding, intermolecular forces, reactions, kinetics, thermochemistry, equilibrium, acids and bases, and thermodynamics/electrochemistry. A strong way to study is to keep asking three questions:
- What particles are present?
- What interactions or reactions are possible?
- How do the numbers from the balanced equation, equilibrium expression, or energy relationship support the claim?
AP free-response questions often reward clear particle-level explanations, correct use of units, and linking evidence to a model. Memorized rules help, but they are strongest when paired with reasoning from charge, polarity, energy, and equilibrium.
Quick Reference
Units
- Unit 1: Atomic Structure and Properties
- Unit 2: Compound Structure and Properties
- Unit 3: Substances and Mixtures
- Unit 4: Chemical Reactions
- Unit 5: Kinetics
- Unit 6: Thermochemistry
- Unit 7: Equilibrium
- Unit 8: Acid-Base Equilibrium
- Unit 9: Thermodynamics and Electrochemistry
Practice Problems
- Use released AP Chemistry free-response questions from College Board for timed practice.
- For each unit, write one-page summaries of the equations, particle diagrams, and common traps.
- After solving a calculation, check whether the sign, units, and magnitude make chemical sense.