Overview

Chemistry - Periodic Trends Part 2

This goes over the periodic trends electron affinity, and electronegativity.

Chemistry - Nuclear Chemistry

Learn about radioactivity

Chemistry - Lewis Dot Structures: Illustrating Chemical Bonds

Learn how Lewis dot structures represent chemical bonding and show valence electrons in atoms.

AP Chemistry - Empirical Formulas

Learn how to calculate empirical and molecular formulas using proportions and moles in this informative article.