GENERAL

3D Visualization of Molecules ('H')
Not only can you see 3D models, you can manipulate them with your mouse. As the site says, "The molecules are separated in five different categories, natural, inorganics, pharmaceuticals, biomolecules and various molecules." By Vagelis Baboukas, a postgraduate student at Environmental Chemical Processes Laboratory (ECPL), division of the Department of Chemistry in University of Crete.
ecpl.chemistry.uch.gr/~baboukas/Java/3Dmol/General.htm

Amino Acids ('H')
List with formulas, 3D modeling link to specific acids, MIME types.
www.chemie.fu-berlin.de/chemistry/bio/amino-acids.html

Biographies of Famous Chemists ('H')
A collection of links, arranged alphabetically by the last name of each subject, that provides rapid access to information about famous chemists throughout history.
www.liv.ac.uk/Chemistry/Links/refbiog.html

Celebrating Chemistry ('E' 'M')
"Celebrating Chemistry is a collection of hands-on activities, games, interactives and articles written for children in the 4th-6th grades. Originally composed for National Chemistry Week and Chemists Celebrate Earth Day publications, these fun-filled materials have been republished in individual PDF files for easy download by parents, teachers or students."
Teacher resources: www.chemistry.org/portal/a/c/s/1/acsdisplay.html?DOC=kids%5ccc_kidspage_index.html
Guía del Maestro: www.chemistry.org/portal/a/c/s/1/acsdisplay.html?DOC=kids%5ccc_kidspage_index_sp.html

Chem4Kids ('H')
A colorful, well-designed site specifically for the high school chemistry student. Includes "tricks" for remembering aspects of atomic structure.
http://www.chem4kids.com/

ChemCom® Teacher Resource Center ('H')
"ChemCom® is a chemistry curriculum written for secondary school students by the American Chemical Society (ACS). It attempts to enhance science literacy by emphasizing chemistry's impact on society. It is aimed at the student who will become a citizen but not necessarily a scientist in a technological society. Designed for teachers around the 8 standard units, "this site takes a different approach to the learning of chemistry. Each of the eight units revolves around a societal question. This question creates a need to know chemistry to find a solution."
Teacher resources: www.lapeer.lib.mi.us/chemcom/index.html

Chemical Compounds ('H')
Searchable index for names of chemical compounds.
www.chemie.fu-berlin.de/cgi-bin/abbscomp

Chemicool ('H')
From MIT, this site features just about everything you'd want to know about any element, including its abundance and how much it costs.
www-tech.mit.edu/Chemicool/

Chemistry Tutor ('H')
Addresses general chemistry topics. Designed by high school students for the ThinkQuest Web design competition.
library.thinkquest.org/2923/index.html

Chemistry through Inquiry: An online course for teachers ('E' 'M')
According to the site, this credit offering gives "3rd-8th grade teachers a fun way to improve their own science knowledge and learn about inquiry-based physical science activities their students will enjoy." By the American Chemical Society.
Teacher resources: www.chemistry.org/portal/a/c/s/1/acsdisplay.html?DOC=education\wande\OnlineCourse.html

Chemmybear.com ('H')
See animated molecules, lectures, AP Chemistry study cards, and lots more.
http://www.chemmybear.com/

ChemTeam ('H')
A tutorial for high school chemistry. Instructive and sometimes cleverly written.
dbhs.wvusd.k12.ca.us/webdocs/ChemTeamIndex.html

CHEMystery ('H')
An online interactive guide to high school chemistry. This award-winning site was designed by high school students for the Thinkquest educational Web design competition.
http://library.thinkquest.org/3659/

Conversion of Units ('H')
Temperature, many other types of units. Calculates conversions for you.
www.chemie.fu-berlin.de/chemistry/general/units.html

Experiencing Chemistry ('M') (Standards)
At least a dozen units for teachers to access online, with printable resources as well. Some of the units are, bio-, industrial, and environmental chemistry, nature of matter, chemistry of foods, toys,... Correlated to standards/benchmarks. By the Oregon Museum of Science and Industry.
Teacher resources: www.omsi.edu/visit/chemistry/

Interactive Period Table of the Elements ('H')
This periodic table also has a sidebar which allows you to select many different types of tables, including tables showing melting point, date of discovery, crystal structure, and many more.
www.chemicalelements.com/

Nobel Prize - Official Site ('H')
Learn about the work of chemists who were awarded the Nobel Prize. Excellent multimedia.
www.nobel.se/chemistry/index.html

Nobel Prize in Chemistry ('H')
Explains who was awarded the prize for chemistry from 1901 to the present day, with supplementary links to explain the reasons for each recipient's selection.
nobelprizes.com/nobel/chemistry/chemistry.html

Periodic Table of Elements ('H')
WebElements is a periodic table database originally from the University of Sheffield, England. The site also includes an isotope pattern calculator and an element percentage calculator.
www.webelements.com/webelements/scholar/index.html

Periodic Table of Elements ('H')
This comes from the famous Los Alamos National Laboratory. Includes information on how to use the table. There's also an interesting piece on the naming of new elements.
pearl1.lanl.gov/periodic/

The pH Factor ('E' 'M')
Learn about acids and bases from this unit developed by the Miami Museum of Science.
www.miamisci.org/ph/index.html
Teacher resources: www.miamisci.org/ph/teacher.html

Plague War ('H')
An investigation into development and alleged deployment of biological weapons. Doesn't approach it from a scientific approach, but its topicality may be of interest to students of chemistry. Looks at the Soviet Anthrax leak of 1979, contains interviews with those behind American and Soviet/Russian weapons policy, and explores allegations that biological weapons were used in South Africa. By PBS's Frontline.
www.pbs.org/wgbh/pages/frontline/shows/plague/

Polymers: Microgalleria ('H') and Polymers for Kids ('E' 'M')
In the Microgalleria you can find everything you ever wanted to know about polymers and more! An exploration that gets progressively more sophisticated the further you venture up each level of the 'mall.' Provides guidance to teachers in the use of this site.
Teacher resources: www.pslc.ws/macrogcss/maindir.html
Polymers for Kids provides activities for elementary and middles school students. Both sites by the Department of Polymer Science, University of Southern Mississippi. www.pslc.ws/paul.html

Re:Source Chemistry ('M')
Re:Source Chemistry is an online middle school teacher resource for background information and many activities in chemistry. Developed from the former NSF-funded teacher professional development project, Operation Chemistry. Many excellent activities here.
Teacher resource: www.chemistry.org/portal/a/c/s/1/acsdisplay.html?DOC=education%5Cwande%5Cresourcechem.html

Scientific American Search Engine ('H')
Fantastic resource: type keywords into this search engine in order to locate articles on a desired topic from the Scientific American database.
www.sciam.com/search/

Sciences Explorer: Chemistry ('H')
Good collection of resources; includes experiments, a unit converter, and entertaining "random factoids." The Sciences Explorer presents quality interactive material on the topics of biology, physics, chemistry, and math. Activities such as 3-D tours, crossword puzzles, conversion tables, and calculator programs are fun and smart! From the Thinkquest competition.
library.thinkquest.org/11771/english/hi/chemistry/

Selected Classic Papers from the History of Chemistry ('H')
Fascinating collection of papers, from the 1600's to the present day. These papers are more than just collections of chemistry observations; they reflect the history of science and its interaction with culture, touching upon a myriad of issues.
webserver.lemoyne.edu/faculty/giunta/papers.html

Test & Quiz Center ('H')
For teachers, by teachers. Review the eight units and decide if the contents provided meet your class needs.
Teacher resources: www.lapeer.lib.mi.us/chemcom/CCExam/TQEIndx.html

Understanding Our Planet Through Chemistry ('M')
Thorough description of the use of chemistry in understanding how history is recorded in the Earth, in geologic processes, the environment; pollution and its prevention, plus the mapping of the chemistry of the Earth. By the U.S.Geological Survey, compiled by Joseph E. Taggart, Jr.
minerals.cr.usgs.gov/gips/aii-home.htm

Wondernet ('E' 'M')
"WonderNet is full of science activities that kids can do (under adult supervision). Teachers can use WonderNet activities to supplement their curriculum. The fun and friendly format makes it suitable for kids to visit on their own from home, too. Currently WonderNet contains activities covering over 25 different topics." By the American Chemical Society.
Teacher resources: chemistry.org/portal/a/c/s/1/wondernetdisplay.html?DOC=wondernet%5Cindex.html