Free Online Chemistry Games
- Several online games to learn about chemical elements and the periodic table.
- http://www.sheppardsoftware.com/Elementsgames.htm

ABC's of Nuclear Science
- Read about the basic structure of atoms, as well as the causes of radioactivity, nucleus decay, half-life of an isotope, reactions, fusion, and cosmic rays. Page includes glossary of terms, formulas and diagrams.
- http://www.lbl.gov/abc/Basic.html

The Atom
- Provides a description of the atom's structure and properties. Explore more information about this fundamental building block of all matter.
- http://library.thinkquest.org/17940/texts/atom/atom.html

Thinkquest: Atomic Evolution
- Offers a history of atomic structure, elements, bonding, and nuclear reactions.
- http://library.thinkquest.org/C0110925/html/theatom/manyelectronatoms/manyelectronatoms1.html

Thinkquest: Five Fantastic Elements
- Provides information about uranium, silicon, hydrogen, oxygen, and nitrogen. Includes a list of experiments and a quiz.
- http://library.thinkquest.org/J002959F/

Atomic Alchemy: Nuclear Processes
- An overview of nuclear chemistry, with interactive tests, forums, and surveys.
- http://library.thinkquest.org/17940/

Atomic Magic
- Atomic images and basics about chemical bonding.
- http://library.thinkquest.org/15567/main.html

Iron
- Includes facts about the history, uses, and properties of this element.
- http://periodic.lanl.gov/elements/26.html

Titanium
- Provides information about the history, sources, isotopes, and uses of this hard metal.
- http://periodic.lanl.gov/elements/22.html

Elementymology and Elements Multidictionary
- Explains the origins of the names of the chemical elements and lists element names in many languages.
- http://www.vanderkrogt.net/elements/

Spectral Lines
- Overview of spectroscopy and Java applets that show spectral lines for different elements.
- http://www.colorado.edu/physics/2000/quantumzone/index.html

Chemical Elements Quiz
- Quiz on the symbols of naturally-occuring elements.
- http://quizhub.com/quiz/f-elements.cfm

Elements and Atoms
- Includes a description and tables. Also covers isotopes.
- http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Elements.html

The Skinny on Peering at Atoms
- From Discovery online, a short description of atoms.
- http://www.discovery.com/area/skinnyon/skinnyon980109/skinnyon.html

The Bohr Model
- Includes a description of atomic theory, shockwave animations, and diagrams.
- http://csep10.phys.utk.edu/astr162/lect/light/bohr.html

Atoms in a Crystal
- An image of silicon atoms arranged on a face of a crystal.
- http://www.aip.org/history/einstein/atoms.htm

Atomic Structure and Subatomic Particles
- Basics about atoms, including structure and behavior.
- http://www.nyu.edu/pages/mathmol/textbook/atoms.html

Atom Builder
- A shockwave application that allows the user to add up and down quarks to a hydrogen nucleus to create a carbon nucleus.
- http://www.pbs.org/wgbh/aso/tryit/atom/

How Atoms Work
- From How Stuff Works. A complete tutorial on atoms, including what they are, current issues, and activities.
- http://science.howstuffworks.com/atom.htm

IGNS: Using the Atom
- Site focuses on the role that atoms play in life, along with how they are used as isotopes in the environment.
- http://www.gns.cri.nz/what/atom/index.html

The Study of the Atom
- History, pictures, technical information, definitions, theories, and models are included.
- http://users.zoominternet.net/~even/science.html

Atomic Structure Timeline
- Timeline that contains short details of the year a specific scientist made a discover, and then gives a link to explain in detail who each scientist was and what they contributed to the scientific world of atoms and atomic structure.
- http://www.watertown.k12.wi.us/hs/teachers/buescher/atomtime.asp

All About Atoms - What Are Atoms?
- Answers the question "what are atoms?" by providing a basic overview of atomic structure. Also, find out if atoms are the smallest in the universe.
- http://education.jlab.org/atomtour/