Medical Dictionary is intended for use by healthcare consumers, students, and professionals as well as anyone who wants to keep up with the burgeoning array of terminology found in today’s medical news. By staying clear of jargon, the dictionary offers fast and concise information, whether the user is searching for a description of an over-the-counter or prescription medication, a medical abbrevi

Chemistry is the study of matter and energy and the interactions between them. Get facts for the elements in the periodic table. Find chemistry demonstrations and experiments and science fair projects. Get chemistry homework help with worked example problems and a glossary. Grow your own crystals. Browse molecular structures. Find articles on chemistry. Find out how things work and get answers to

This site provides chemistry, environmental and hazardous materials news, careers & resources including: in depth articles; a detailed periodic table of elements; chemical database; hazmat emergency response guides; hazmat placarding information; and much more.

NIST site provides chemical and physical property data on over 40,000 compounds.

A freely accessible database of chemicals with synthesis references and physical properties

ChemExper is a company joining together the areas of chemistry, computer science and telecommunication. The ChemExper Chemical Directory is a free service that allows to find a chemical by its molecular formula, IUPAC name, common name, CAS number, catalog number, substructure or physical characteristics as well as chemical suppliers. This database contains currently more than 500000 chemicals, 16

ChemIndustry.com is the search engine of the chemical world. The best place for chemists and chemical industry professionals to find chemicals, equipment, services and chemical resources.