[ 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.

[ 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.

[ Teens/Mature Teens ] Explains the origins of the names of the chemical elements and lists element names in many languages.

[ Teens/Mature Teens ] Several online games to learn about chemical elements and the periodic table.

[ Teens ] From How Stuff Works. A complete tutorial on atoms, including what they are, current issues, and activities.

[ Teens/Mature Teens ] An introductory starting point for those interested in the field of molecular modeling.