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University of Colorado
University of Colorado: Ph Et Interactive Simulations: Salts and Solubility
Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions...
Vision Learning
Visionlearning: Atomic Theory: Bohr and the Beginnings of Quantum Theory
Description of the ideas and experimentation that led to quantum theory. Focus on electrically charged ions and isotopes.
Other
The Finishing Industry: Electroplating How It Works
A comprehensive "how it works" page from the industry that uses it a lot. What it is, how it works, good diagram, and a demonstration that students can do in class (or at home with adult supervision).
National High Magnetic Field Laboratory
Magnet Academy: Oil Drop
It may look like a simple black blob, but an oil drop is in fact a phenomenally complex mix of immense molecules called hydrocarbons. Using a type of mass spectrometry called FT-ICR, scientists can analyze oil and other macromolecules...
Chem Tutor
Chem Tutor: Chemistry: Writing Ionic Compound Formulas
A tutorial on writing formulas for ionic compounds.