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Unit Plan
CK-12 Foundation

Ck 12: Modern Atomic Theory

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Rutherford's model of the atom was better than earlier models. But it wasn't the last word. Danish physicist Niels Bohr created a more accurate and useful model....
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Handout
Other

Socratic: What Are the 6 Models of the Atom?

For Students 9th - 10th
Brief explanation of six major models of the atom along with illustrations. Covers the Greek model (Democritus), John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and the modern electron cloud or quantum mechanics model.
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Handout
Science Struck

Science Struck: Electron Cloud Theory Explained

For Students 9th - 10th
Explains the Uncertainty Principle, wave-particle duality, what the electron cloud model is, and how it came about as a result of the Schrodinger equation for Hydrogen.