Relevant links at Khan Academy, organized by Unit.

1 - 2 Khan States of Matter

1 Khan Atomic Structure and Electron Configurations — Khan academy lessons on atomic structure and electrons

1 Khan Ideal Gas Laws

1 Khan Intro to Atom — Khan Academy introductory lessons on the atom and elements

1 Khan Periodic Table and trends — Khan academy lessons on periodic table, periodic trends and bonding

1 Khan Radioactive Decay

2 - 3 Khan Compounds and Reactions — Khan academy lessons on compounds, chemical reactions, and stoichiometry

4 Khan Acids and Bases

4 Khan Reaction Rates and Equilibria

4 Khan Redox Reactions