- American Chemical Society
The primary professional organization for chemists and related occupations.
- Chemistry Guide
A directory and search engine of chemistry-related resources on the Internet that searches the contents of more than 250 websites.
- MIT OpenCourseWare
A web-based publication of virtually all MIT course content: including past course syllabi, readings, assignments (and solutions), exams (and solutions), and lecture handouts.
- Periodic Table of Elements
An interactive periodic table of the elements provided by the Los Alamos National Laboratory. Clicking on an element's symbol brings up information about that element: including its history, sources, isotopes, properties, uses, and safe handling.
- Royal Society of Chemistry
The largest organization in Europe for advancing the chemical sciences. Supported by a worldwide network of members and an international publishing business. Activities span education, conferences, science policy, and the promotion of chemistry to the public.
- The Periodic Table of Videos
Short videos about every element on the periodic table, plus other chemistry experiments.