Science & Technology
Chemistry & Chemical Hazards
- Agency for Toxic Substances and Disease Registry
Provides information about toxic substances and contaminants found in the home, at work, and elsewhere. The agency is a part of the U.S. Department of Health and Human Services.
- Helping You to Understand Chemistry
Written by a British chemistry teacher, this site is designed to help high school chemistry students.
Contains a set of databases on toxicology and hazardous materials. Maintained by the U.S. National Library of Medicine.
- WebElements: The Periodic Table on the Web
Describes the physical properties and historical background of every element in the periodic table.
- Where to Find Material Data Safety Sheets on the Internet
Includes a listing of sites where material data safety sheets can be found, which lists the physical properties, toxicity, health effects, storage and disposal of household and industrial chemicals.