| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 3,589,366,300 visitors served. |
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
anion |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.01 sec. |
|
|
anion (ăn`ī'ən), atom or group of atoms carrying a negative charge. The charge results because there are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction (see oxidation and reduction oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation
..... Click the link for more information. ) or from neutral acids (see acids and bases acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Properties ..... Click the link for more information. ) or polar compounds by ionization. Anionic species include Cl−, SO4−−, and CH3COO−. Highly colored intermediates in organic reactions are often radical anions (anions containing an unpaired electron). Salts salt, chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases). Characteristics and Classification of Salts ..... Click the link for more information. are made up of anions and cations cation , atom or group of atoms carrying a positive charge. The charge results because there are more protons than electrons in the cation. Cations can be formed from a metal by oxidation (see oxidation and reduction), from a neutral base (see acids and bases) by ..... Click the link for more information. . See ion ion, atom or group of atoms having a net electric charge. Positive and Negative Electric Charges A neutral atom or group of atoms becomes an ion by gaining or losing one or more electrons or protons. ..... Click the link for more information. . anionAtom or group of atoms carrying a negative electric charge, indicated by a superscript minus sign after the chemical symbol. Anions in a liquid subjected to an electric field migrate toward the positive electrode (anode). Examples include hydroxyl (−OH−; see hydroxide), carbonate (−CO32−), and phosphate (−PO43−). See also ion; compare cation. anion a negatively charged ion; an ion that is attracted to the anode during electrolysis anion [′a‚nīยทən] (chemistry) An ion that is negatively charged. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| Mentioned in | ? | References in periodicals archive | ? | Encyclopedia browser | ? | Full browser | ? | |||
|---|---|---|---|---|---|---|---|---|---|---|
No references found | has patented a dye composition comprising, in a medium that is suitable for dying keratin fibers, at least one dye chosen from oxidation dye precursors and direct dyes, at least one surfactant chosen from nonionic surfactants and anionic surfactants, at least one hydroxyethylcellulose, at least one cationic associative polymer; and at least one fatty substance. A polymer having a functional head group derived from a sulfur containing anionic initiator, and optionally an additional functional group resulting from the use of a functional terminating reagent, coupling agent or linking agent is also provided. The surfactants can be discharged from wastewater treatment plants (WWTP) and from the sewage sludge used as a fertilizer in the agriculture, because anionic surfactants can accumulate in the sewage sludge [7-9]. |
anionic |
Anion exchanging Anion exchanging Anion exchanging Anion exchanging Anion exchanging membrane Anion exchanging membrane Anion exchanging membrane Anion exchanging membrane anion gap anion gap anion gap anion gap anion gap anion gap anion gap Anion Gap Metabolic Acidosis anion gap test Anion Liquid Ion Exchange Anion Selective Exhaustive Injection Anion Self-Regenerating Suppressor Anion-exchange Anion-exchange Anion-exchange Anion-exchange Anion-Exchange Membrane anion-exchange resin anion-exchange resin anion-exchange resin anion-exchange resin Anion: Cation Symporter anionic anionic compoundanionic detergent anionic detergent anionic detergent anionic detergent anionic dye anionic dye anionic dye anionic dye anionic dye Anionic Neutrophil Activating Peptide anionic polymerization anionic/zwitterionic phospholipid ratio anionically anionically anionically anionically anionotropy Anions Anions Anions Anions ANIP ANIPA Anipemza ANIPI ANIPIO ANIPLA ANIPO Anipryl | |||||||
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|