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Chapter 2: Matter is Made up of Atoms
The Discovery of the Electron
This site describes the history of the electron and its discoverer, J.J. Thomson. Visit this site and hear Thomson describe how he discovered these subatomic particles.
Computer
Graphics
Visit this site to see various images of atomic structures. Be sure to watch the movie that shows the Bohr Model.
How Light
Is Made...
This site describes how electrons move from orbital to orbital as they absorb and release energy. Visit this site to discover how this produces an atomic spectrum.
