Thomson and the Plum Pudding Model by Thinkquest
Thomson Cathode-ray Tube Experiment: Link 1 Link 2

Animation by Prentice Hall (requires QuickTime)
Animation by Thinkquest

Quarks: Hyperphysics (select "quarks" from the menu on the right)
Leptons: Hyperphysics (select "lepton" from the menu on the right)
Background on the Standard Model of the Atom from Stanford University website, including  Quark Theory
Build your own atom by PBS (requires Shockwave)
Pictoquarks

Animation by Prentice Hall (requires QuickTime)
Additional Background on Rutherford by Thinkquest
Rutherford Model website

Pictorial Periodic Table by Maricopa College
Table of Isotopes from Berkeley Laboratory
Isotope Table at Wikipedia
Another Table of Isotopes

Polyatomic Ions to Memorize

Nomenclature Worksheet

Answers to Nomenclature Worksheet