ANION

ănˈīˌən, 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) or from neutral acids (see acids and bases) 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 are made up of anions and cations. See ion.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Anion
We found: 452 results
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258  

 

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138  

 

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books on: Anion  - 258 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Radioisotopes in Biology and Agriculture: Principles and Practice
Book by C. L. Comar; McGraw-Hill, 1955
Subjects: Radioisotopes In Agriculture, Radioisotopes In Biology
...Determination in animal tissue Mixed cation and anion extracts Lactic acid Determination in biological...Nucleosides Removal of anionic compounds Anion-free-base form Nucleotides, nucleo...poly mer acids, amino acids, cations Anion Organic acids Separation from each other...
2.
AP Chemistry: 2008-2009
Book by John T. Moore, Richard H. Langley; McGraw-Hill, 2008
Subjects: Advanced Placement Programs (Education)--Examinations--Study Guides, Chemistry--Examinations--Study Guides, College Entrance Achievement Tests--United States--Study Guides
...cation from the base and the anion from the acid. In principle...conjugate acid of the base, and the anion from the acid is the conjugate...combination of only these cations and anions are neutral. The conjugate...solution. If the conjugate base (anion) of a weak acid is in a salt...
3.
A Review of the Scientific Literature as It Pertains to Gulf War Illnesses: Pyridostigmine Bromide - Vol. 2
Book by Beatrice Alexandra Golomb; Rand, 1998
Subjects: Persian Gulf Syndrome
...1 The anion gap (or difference between measured cations and measured anions) is calculated by subtracting...measured cations minus measured anions (the anion gap) is equal to unmeasured anions minus unmeasured cations...
4.
Schaum's Outline of Theory and Problems of College Chemistry
Book by Jerome L. Rosenberg, Lawrence M. Epstein, Peter J. Krieger; McGraw-Hill, 2007
Subjects: Chemistry--Outlines, Syllabi, Etc, Chemistry--Problems, Exercises, Etc
...Zn2+ to any two of its nearest-neighbors? (d) What minimum r +/r - ratio is needed to avoid anion-anion contact, if closest cation-anion pairs are assumed to touch? Ans. (a) 4; (b) 4; (c) 109 28; (d) 0.225 10.20. Why...
5.
Salts, Acids, and Bases: Electrolytes: Stereochemistry
Book by Paul Walden, Ludwig Frederick Audrieth; McGraw-Hill Book Company, Inc., 1929
Subjects: Acids, Bases (Chemistry), Electrolytes, Salts, Stereochemistry
Second: to bases , a Formation of an anion similar to that of the solvent: NaOH...electrolyte. It will be noted that the same anion, CH3COO-, is assumed to be present in...dissolved in antimony trichloride, the anion of the solvent will again be similar to...
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journal articles on: Anion  - 138 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Goitrogenic Anions, Thyroid-Stimulating Hormone, and Thyroid Hormone in Infants
Journal article by Yang Cao, Benjamin C. Blount, Liza Valentin-Blasini, Judy C. Bernbaum, Terry M. Phillips, Walter J. Rogan; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Ammonium perchlorate--Health aspects, Infants--Health aspects, Thyroid diseases--Development and progression, Thyroid diseases--Risk factors
Goitrogenic Anions, Thyroid-Stimulating Hormone...sup.-) is an inorganic anion used industrially as an oxidizer...analyzed <br/ for goitrogenic anions and iodide. (a) <br...between each of the goitrogenic anions and urinary TSH and T.sub...
2.
An Almt1 Gene Cluster Controlling Aluminum Tolerance at the Alt4 Locus of Rye (Secale Cereale L.)
Journal article by N. C. Collins, N. J. Shirley, M. Saeed, M. Pallotta, J. P. Gustafson; Genetics, Vol. 179, 2008
Subjects: Acidity, Aluminum, Ball bearings, Genes, Organic Anion Transporters, Rice, Wheat
3.
(Bi)sulfite Oxidation by Copper, Zinc-Superoxide Dismutase: Sulfite-Derived, Radical-Initiated Protein Radical Formation
Journal article by Kalina Ranguelova, Marcelo G. Bonini, Ronald P. Mason; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Copper (Nutrient)--Chemical properties, Copper (Nutrient)--Health aspects, Copper in the body--Chemical properties, Copper in the body--Health aspects, Free radicals (Chemistry)--Properties, Free radicals--Properties, Oxidation-reduction reaction--Observations, Oxidation-reduction reactions--Observations, Sulfites--Chemical properties, Sulfites--Health aspects, Zinc compounds--Chemical properties, Zinc compounds--Health aspects
...forming the peroxymonosulfate anion radical (-O.sub.3 SOO...is a precursor of the sulfate anion radical (SO.sub.4...dismutation of the superoxide anion into O.sub.2 and hydrogen...proposed that at pH 7.4, anions structurally similar to HCO...
4.
Development and Application of a Robust Speciation Method for Determination of Six Arsenic Compounds Present in Human Urine
Journal article by Lisa S. Milstein, Amal Essader, Edo D. Pellizzari, Reshan A. Fernando, James H. Raymer, Keith E. Levine, Olujide Akinbo; Environmental Health Perspectives, Vol. 111, 2003
...temperature, in conjunction with cation- and anion-exchange columns in series. The performance...arsenic species in food and urine using an anion-exchange column, with AsB eluting at...separation of six or more arsenic species on an anion-exchange column in food and biologic...
5.
Association of Blood Arsenic Levels with Increased Reactive Oxidants and Decreased Antioxidant Capacity in a Human Population of Northeastern Taiwan
Journal article by Meei-Maan Wu, Hung-Yi Chiou, Tsung-Wei Wang, Yu-Mei Hsueh, Iuan-Horng Wang, Chien-Jen Chen, Te-Chang Lee; Environmental Health Perspectives, Vol. 109, 2001
...culture studies. Further, the superoxide anion and hydroxy peroxide (H.sub.2O.sub...chemiluminescence assay system for superoxide anion or some unidentified characteristics of...induced oxidants, such as the superoxide anion and hydroxy peroxide, have been implicated...
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magazine articles on: Anion  - 31 results

       More magazine Results: 1-10 11-20 21-30 31-31 >>  
 
1.
Heavenly Chemistry: Astronomers Announce Astrophysical Anion
Magazine article by Ron Cowen; Science News, Vol. 172, July 28, 2007
Subjects: Anions--Research, Astrophysics--Research
...Announce Astrophysical Anion. by Ron Cowen The discovery...negatively charged ion, or anion. Some researchers had suggested that anions, which have one or more...be more abundant. "Anions have so far been neglected...team detected the same anion in a cold cloud of molecular...
2.
Electrolytes; the Charge in the Body's Power System
Magazine article by Annabel Hecht; FDA Consumer, Vol. 20, July 1986
Subjects: Calcium (Nutrients)--Physiological aspects, Calcium in the body--Physiological aspects, Chlorides--Physiological aspects, Electrolyte metabolism--Analysis, Electrolytes--Physiological aspects, Magnesium (Nutrients)--Physiological aspects, Magnesium in the body--Physiological aspects, Potassium (Chemical element)--Physiological aspects, Potassium--Physiological aspects, Sodium (Nutrients)--Physiological aspects, Sodium in the body--Physiological aspects
...negatively charged and are called anions (ani uns). The major cations...calcium. Chloride is a major anion. Electrolytes are distributed...Chloride Chloride, the principal anion of the extracellular fluid is...the second most prevalent anion, from tipping the acid-base...
3.
Top 10 Laboratory Tests: Blood Will Tell
Magazine article by Dixie Farley; FDA Consumer, Vol. 23, July 1989
Subjects: Blood tests--Medical examination, Blood--Medical examination, Diagnosis, Laboratory--Evaluation, Laboratory diagnosis--Evaluation
...cation"; if its negative, the term "anion" is used. (See also "Electrolytes...another electrolyte. Comments: The primary anion in the fluid outside cells, chloride teams...bicarbonate to increase to maintain the necessary anion level in serum, which, in turn, can...
4.
50 Years Ago in Biochemistry
Magazine article by Ronald Breslow; The Scientist, Vol. 22, May 2008
Subjects: Awards & honors, Chemicals, Essays, Salt
...involving ThPP are formally acyl anions, which are unstable species...bond, so as to convert the anions instead to new stable species...also involves a formal acyl anion intermediate, while the most...precedent), the resulting carbon anion should be able to act as catalyst...
5.
Minerals for Good Health
Magazine article by John S. Williamson, Christy M. Wyandt; Drug Topics, Vol. 144, November 20, 2000
Subjects: Dietary supplements, Health, Minerals, Patients, Pharmacists, Questions, Statistical data, Tests, United States
...shown in Table 1. Chloride (chlorine) Chloride (Cl) is an anion generally consumed as sodium chloride (NaCl) or table salt...F), present in the body in bone and teeth, exists as its anion fluoride. Its best-known effect is to serve as a catalyst...
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newspaper articles on: Anion  - 21 results

       More newspaper Results: 1-10 11-20 21-21 >>  
 
1.
Valenzuela Mayor Sherwin Gatchalian on Scrapped Phil. Volcanoes EDSA Billboard; Rugby Team Members, Celebs and Netizens React
Newspaper article; Manila Bulletin, July 9, 2011
Subjects: Celebrities, Mayors, Twitter (Online service), Volcanoes
...billboards!" he continued. Other members of the rugby team Arnold Anion and actor-model Andrew Wolff, who are not featured in the billboards, also shared their thoughts via the site.Anion posted, "Surprised at the outcome, but greatful for the...
2.
Chioles-4263419
Newspaper article; Daily Herald (Arlington Heights, IL), June 3, 2011
...brother Jack (Maryjane); her sister, Elizabeth; and the matriarch of the family her grandaunt and godmother, Ana Marie "Anion." In lieu of flowers, memorials may be made to Canine Companions, P.O. Box 41 Woodstock, IL 60098, in honor of her...
3.
List of New Medical Technologists
Newspaper article; Manila Bulletin, September 15, 2005
...MARIA AUBREY MARCOS CRUZ, VANESSA LYRA PARUNGAO CUADRA, JOSE KIM JR CATAHURAN CUAJAO, BELBETH LUZA CUBELO, SHEILA MAE ANION CUBOS, GEMMA BACONG CUDIAMAT, RUBEN GACOSCOS CUENCO, GLYCERYL IVY NOROMBABA CUERING, STEVE SILAGAN CUNANAN, NERICAR FLOR...
4.
Cholesterol: What You Can Do about It
Newspaper article; Western Mail (Cardiff, Wales), February 20, 2006
Subjects: Cholesterol
...considered to be OK. A number of lipid lowering drugs are available to combat high cholesterol levels and include statins, anion exchange resins and fibrates. Lifestyle changes can also help reduce cholesterol levels. Reducing fatty foods and eating a...
5.
List of New Medical Technologists
Newspaper article; Manila Bulletin, September 11, 2005
...MARIA AUBREY MARCOS CRUZ, VANESSA LYRA PARUNGAO CUADRA, JOSE KIM JR CATAHURAN CUAJAO, BELBETH LUZA CUBELO, SHEILA MAE ANION CUBOS, GEMMA BACONG CUDIAMAT, RUBEN GACOSCOS CUENCO, GLYCERYL IVY NOROMBABA CUERING, STEVE SILAGAN CUNANAN, NERICAR FLOR...
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encyclopedia articles on: Anion  - 4 results

 
 
1.
Anion
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ANION an i n, atom or group of atoms carrying...are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction...in organic reactions are often radical anions (anions containing an unpaired electron...
2.
Ion , in Chemistry
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...net negative charge and is called an anion . Since ordinary matter is electrically...normally exist as groups of cations and anions such that the sum total of positive...needed to neutralize each carbonate anion, CO 3 2 , because its charge is twice...
3.
Isomorphism
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...together in a solid solution. Isomorphous substances usually have similar chemical formulas, and the polarizability and ratio of anion and cation radii are generally comparable (see ion ). Isomorphism was discovered (c.1820) by Eilhard Mitscherlich, who...
4.
Valence , in Chemistry
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...accept electrons and in compounds exist in the negative, or anionic, state, are assigned negative oxidation numbers (see anion ). The oxidation number is 1 for chlorine and the other halogens, which accept one electron to complete their valence shell...


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