Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Search
Follow The Annenberg Learner on LinkedIn Follow The Annenberg Learner on Facebook Follow Annenberg Learner on Twitter
MENU
Menu

Unit 3: Atoms and Light—Exploring Atomic and Electronic Structure

spectrum

Unit Overview

Using light as a probe, scientists found innovative ways to make inferences about the inner structure of the atom. In this unit, we will follow the gradual change from considering the atom as a single indivisible particle to a later understanding of the atom composed of its constituent subatomic parts, including the electron, the first subatomic particle to be discovered, the proton, and the neutron. This new picture of matter lead to the development of the quantum model of the atom, as well as ways to identify traces of chemical elements, whether on Earth, in the Sun, or in a distant galaxy.

by Louisa Morrison

Louisa Morrison

Sections

  1. Introduction
  2. The Electron
  3. The Nucleus
  4. Inside the Nucleus—Protons and Neutrons
  5. The Electromagnetic Spectrum
  6. Light from Elements
  7. The Spectral Lines of Hydrogen
  8. Photoelectric Effect
  9. The Quantum Model
  10. Conclusion
  11. Further Reading

Download Unit 3 Online Text

© Annenberg Foundation 2014. All rights reserved. Legal Policy