Crescent Public Schools
The Internet Science Room: The Periodic Table and Atomic Theory of Matter
A chemistry tutorial highlighting historical development of the atomic theory of matter and the periodic table of elements.
Other
Iun: Modern Atomic Theory
This is an excellent site with information on the discovery of the atom and the different models. Includes a sample question and answer using Planck's constant.
American Association for the Advancement of Science
Fermilab Physicists Find New Matter Antimatter Asymmetry
This complicated yet interesting article describing the discovery of asymmetry between the behavior of matter and antimatter.
TED Talks
Ted: Ted Ed: The 2400 Year Search for the Atom
How do we know what matter is made of? The quest for the atom has been a long one, beginning 2,400 years ago with the work of a Greek philosopher and later continued by a Quaker and a few Nobel Prize-winning scientists. Theresa Doud...
Exploratorium
Exploratorium: Cern: Antimatter
A wonderfully written non-technical introduction to antimatter, as well as a brief discussion of the investigation into the asymmetry between the quantities of matter and antimatter observed in our universe.