Chemistry

Open Access journals from the publisher Springer.

National Center for Biotechnology Information. Biological activities of small molecules - chemical structures, chemical substance records and bio assay records.

A structured textbook of chemical information.

Health effects of consumer products.

Safety Data Sheets (formerly Materials Safety Data Sheets [MSDS]). Per OSHA, the SDS includes information such as the properties of each chemical; the physical, health, and environmental health hazards; protective measures; and safety precautions for handling, storing, and transporting the chemical.

An authoritative database (by the former National Bureau of Standards) representing critical evaluation of relevant data by experts. Broad coverage including thermochemistry for 5,000 compounds, ion energetics for 14,000 compounds, and more.

Offers quick and easy factual information about the elements. Also includes images.

KnowledgeDoor, an open access virtual depot of constants, conversion factors, and mathematical equations,

Wolfram|Alpha is a unique engine for computing answers and providing knowledge in all scientific disciplines.

A collection of video clips covering the 118 elements in the periodic table. From hydrogen to ununoctium, each element has its own short video.

Information about the Nobel Prize and biographical information about prize winners