All AP Courses

Unit 1

AP Chemistry Unit 1: Atomic Structure and Properties

7–9% of the multiple-choice section · 8 topics

Moles and molar mass, mass spectra, composition and empirical formulas, electron configuration, photoelectron spectroscopy, periodic trends, and valence electrons in ionic compounds.

Topics

  1. 1.1Moles and Molar Mass
  2. 1.2Mass Spectra of Elements
  3. 1.3Elemental Composition of Pure Substances
  4. 1.4Composition of Mixtures
  5. 1.5Atomic Structure and Electron Configuration
  6. 1.6Photoelectron Spectroscopy
  7. 1.7Periodic Trends
  8. 1.8Valence Electrons and Ionic Compounds

Unit check

10 questions drawn from every lesson in Unit 1. Each wrong answer links back to where the idea is taught.

Take the Unit 1 check