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The properties of the elements are periodic functions of their atomic numbers.

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Period

The elements in a horizontal row of the periodic table.

Autoionization

An ionization reaction between identical molecules.

Polymer

A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

Electrophile

Positively charged or electron-deficient.

All Chemicals - Chemical Glossary

The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Standard Electrode Potential

By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

Chemical Resources

Chemindustry.com - Includes chemicals, chemical companies, engineering, and process equipment. Search tool for products, services, and information.
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Chemical Advisory Service - Directories of chemical manufacturers and traders for Australia and New Zealand and chemical manufacturers for the Asia Pacific region.
Chemcompass - The database for the chemical industry. Search in over 20,000 products, 2,000 companies, brands, EINECS or CAS-numbers, and detailled company information.
Chemical Week - Daily news and product updates for professionals in the chemical industry.
American Chemistry Council News and Media - Provides chemistry business and industry news, updated issue briefs, fact sheets, press releases, media contacts and other resources.
About Chemistry - News articles, periodic tables, educational resources, newsletters, and annotated links.
General Chemistry Online - Rich resource for students and teachers of introductory chemistry. Includes interactive course guides and tutorials, an exam survival guide, reference tables, self-grading quizzes and exams, a searchable glossary, a question and answer board, answers to over 300 frequently asked questions, and a chemical trivia quiz.
Chem4Kids - Learn about chemistry including matter, atoms, and reactions. Includes online quizzes.
Chemistry & Environmental Dictionary - Contains definitions for many chemistry, environmental and other related technical terms and acronyms.
EDF Chemical Scoreboard - Toxic Release Inventory data for the US. Sources and amounts of toxic chemicals released to air and water. Also has information on health effects and other topics.
Chemistry Articles - Collection of chemistry and chemical related articles.

 

Boiling Point Elevation

The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.