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TopDir is a human edited web directory with various categories, a collection of hand-picked web resources for visitors

TopDir offers free website promotion for webmasters and website owners. Relevant search results and many categories for adding and promoting websites. Free web promotion for websites at TopDir directory. Submit your url for review. A collection of hand-picked web resources for visitors. This page is focused on one particular aspect of Kids and Teens, School Time, Science, Chemistry, Elements.

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» 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.

» 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://library.thinkquest.org/17940/texts/atom/atom.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.

» 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.

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

http://library.thinkquest.org/15567/main.html

» Atomic Magic [ Teens ] - Atomic images and basics about chemical bonding.

http://www.nyu.edu/pages/mathmol/textbook/atoms.html

» Atomic Structure and Subatomic Particles [ Teens ] - Basics about atoms, including structure and behavior.

» 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.aip.org/history/einstein/atoms.htm

» Atoms in a Crystal [ Teens ] - An image of silicon atoms arranged on a face of a crystal.

http://csep10.phys.utk.edu/astr162/lect/light/bohr.html

» The Bohr Model [ Teens/Mature Teens ] - Includes a description of atomic theory, shockwave animations, and diagrams.

» Chemical Elements Quiz [ Teens/Mature Teens ] - Quiz on the symbols of naturally-occurring elements.

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Elements.html

» Elements and Atoms [ Teens/Mature Teens ] - Includes a description and tables. Also covers isotopes.

» 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.sheppardsoftware.com/Elementsgames.htm

» Free Online Chemistry Games [ Teens/Mature Teens ] - Several online games to learn about chemical elements and the periodic table.

http://science.howstuffworks.com/atom.htm

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

http://www.gns.cri.nz/what/atom/index.html

» 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://periodic.lanl.gov/elements/26.html

» Iron [ Teens/Mature Teens ] - Includes facts about the history, uses, and properties of this element.

http://www.discovery.com/area/skinnyon/skinnyon980109/skinnyon.html

» The Skinny on Peering at Atoms [ Kids/Teens ] - From Discovery online, a short description of atoms.

http://www.colorado.edu/physics/2000/quantumzone/

» Spectral Lines [ Teens ] - Overview of spectroscopy and Java applets that show spectral lines for different elements.

http://users.zoominternet.net/~even/science.html

» The Study of the Atom [ Teens ] - History, pictures, technical information, definitions, theories, and models are included.

» Thinkquest: Five Fantastic Elements [ Teens/Mature Teens ] - Provides information about uranium, silicon, hydrogen, oxygen, and nitrogen. Includes a list of experiments and a quiz.

http://periodic.lanl.gov/elements/22.html

» Titanium [ Teens/Mature Teens ] - Provides information about the history, sources, isotopes, and uses of this hard metal.

TopDir is a human edited web directory with various categories. Our mission is to organize theme based websites and remove the clutter from the information. We strive to provide context based website results to our visitors. This directory is an evolving one and we regularly add new categories, if there is a necessity. Members can suggest new categories and websites for inclusion. This is one stop promotion site for webmasters and website owners. We invite you to browse the categories and suggest your website url for an editor review. This page is focused on one particular aspect of Kids and Teens, School Time, Science, Chemistry, Elements.

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