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This page follows the New AP exam starting Fall 2022
Unit 1: Atomic Structure and Properties
You’ll learn about the composition of atoms and ways scientists measure and categorize these molecular building blocks.
Topics may include:
- Moles and molar mass
- Mass spectroscopy of elements
- Elemental composition of pure substances
- Composition of mixtures
- Atomic structure and electron configuration
- Photoelectron spectroscopy
- Periodic trends
- Valence electrons and ionic compounds
On The Exam
7%–9% of exam score
