CK-12 Foundation
Ck 12: Physical Science: Electron Cloud Atomic Model
[Free Registration/Login may be required to access all resource tools.] Features the electron cloud atomic model and atomic orbitals.
Science Struck
Science Struck: Electron Cloud Theory Explained
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.
Science Struck
Science Struck: Electron Cloud Model
Explains what the electron model is and the scientists who contributed to its development.
Concord Consortium
Concord Consortium: Molecular Workbench: Electrons in Atoms and Molecules
A model that explores why electrons are so important in chemistry. Investigate electron clouds, what happens when two atoms come together, and chemical polarity.
American Chemical Society
Middle School Chemistry: Periodic Table and Energy Level Models
Learners interpret the information given in the periodic table to describe the arrangement of electrons on the energy levels around an atom.
Other
Socratic: What Are the 6 Models of the Atom?
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.
Tom Richey
Slide Share: Atomic Models: Everything You Need to Know
A detailed slideshow for Grade 8 students that looks at the history of our understanding of atoms. Looks at the ideas presented by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr, and the modern-day wave model. A...
Concord Consortium
Concord Consortium: Structure of an Atom
Observe the probable location of electrons around an atom. Trace the electrons over time to draw conclusions about where electrons are likely to be found around an atom's nucleus. How does the trace pattern relate to the electron cloud...
CK-12 Foundation
Ck 12: Modern Atomic Theory
[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....
Purdue University
Purdue University: Orbital Shells
This site from the Purdue University provides an overview of atomic orbitals and how quantum numbers specify these orbitals. Includes a model that can be rotated and examined in 3D. Includes learning exercises and answers.
CK-12 Foundation
Ck 12: Modern Atomic Theory
[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....
University of Waterloo (Canada)
University of Waterloo: Vsepr Models
The University of Waterloo provides background in pair repulsion and confidence building questions. Try this one once you think you know what you are doing!