Art  ●   Biology  ●   Business & Economics  ●   Chemistry  ●   Communication  ●  Computer Science
Education  ●   English & Language  ●   Film  ●  Health  ●  History  ●   Literature  ●   Music  ●   Philosophy
Political Science & Government  ●   Reference  ●   Religion  ●   Research & Writing  ●   Science  ●   Sociology

General

• Crystallography online - key to the field of crystallography
• The Macrogalleria - introduction to polymers
• Organic Chemistry Resources Worldwide - organized set of links to organic chemistry sites
• Paul's Chemistry Lab - award-winning chemistry site for K-12 and college students
• Resources for Chemistry Educators
• Visual Elements - a fun site to study the periodic table of chemical elements
• WebElements - award-winning in depth information about elements

Associations

• American Chemistry Council
• American Chemical Society
• ASTM International - international standards news and publications
• Chemical Heritage Foundation - research tools
• IAEAC - International Association of Environmental Analytical Chemistry
• Materials Research Society: The Materials Gateway

Reference

• Abbreviations of Chemical Compounds
• Acronyms and Abbreviations
• ACS Publications - Publications of the American Chemical Society.
• ChemFinder - Chemical search engine and database
• Chemistry Gateway: Physical Sciences Information Gateway (PSIgate)
• Combined Chemical Dictionary (CRC) - organic compounds, natural products, inorganic and organometallic, drugs, analytical reagents.
• Environmental Contaminates Encyclopedia - National Park Service
• General Chemistry Glossary - Fred Senese
• Nobel Prizes in Chemistry
• Scorecard - facts on chemicals, local pollution; environmental maps
• ToxFAQs - Agency for Toxic Substances and Disease Registry; summaries of hazardous substances
• Web-Elements - Web-elements site maintains  full information on all elements and their extraction.