ABC's of Nuclear Science [ Mature Teens ] - 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

All About Atoms - What Are Atoms? [ Kids ] - 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/

Atom Builder [ Teens/Mature Teens ] - 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/

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

Atomic Evolution [ Teens/Mature Teens ] - Thinkquest site offering a history of atomic structure, elements, bonding, and nuclear reactions. http://library.thinkquest.org/C0110925/html/theatom/manyelectronatoms/manyelectronatoms1.html

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

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

Atomic Structure Timeline [ Teens/Mature Teens ] - 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

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

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

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

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

Five Fantastic Elements [ Teens/Mature Teens ] - Thinkquest site about uranium, silicon, hydrogen, oxygen, and nitrogen. Includes a list of experiments and a quiz. http://library.thinkquest.org/J002959F/

How Atoms Work [ Teens ] - 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 [ Teens ] - 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

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

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

The Atom [ Kids/Teens ] - 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

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

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