Share this Article on Facebook Twitter Submit this article to Reddit Give this article a thumbs-up on StumbleUpon

acid

acid

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

ac·id / ˈasid/ • n. a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind. Often contrasted with alkali or base1 . ∎ fig. bitter or cutting remarks or tone of voice. ∎  inf. the drug LSD. ∎ Chem. a molecule or other entity that can donate a proton or accept an electron pair in reactions. • adj. 1. containing acid or having the properties of an acid; in particular, having a pH of less than 7: poor, acid soils. Often contrasted with alkaline or basic. ∎  Geol. (of rock, esp. lava) containing a relatively high proportion of silica. ∎  Metallurgy relating to or denoting steelmaking processes involving silica-rich refractories and slags. 2. sharp-tasting or sour: acid fruit. ∎  (of a person's remarks or tone) bitter or cutting. ∎  (of a color) intense or bright: an acid green. DERIVATIVES: ac·id·y adj.

Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"acid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"acid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-acid.html

"acid." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-acid.html

Learn more about citation styles

acid

A Dictionary of Biology | 2004 | Copyright

acid A type of compound that contains hydrogen and dissociates in water to produce positive hydrogen ions. The reaction, for an acid HX, is commonly written: HX ↔ H+ + X–

In fact, the hydrogen ion (the proton) is hydrated, and the complete reaction is: HX + H2O ↔ H3O+ + X–

The ion H3O+ is the hydroxonium ion. The strength of an acid depends on the extent to which it dissociates: strong acids (e.g. sulphuric acid and hydrochloric acid) are almost completely dissociated in water; weak acids (e.g. carbonic acid) are only partially dissociated. See also buffer; pH scale. Compare base.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"acid." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"acid." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-acid.html

"acid." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-acid.html

Learn more about citation styles

acid

A Dictionary of Ecology | 2004 | | Copyright

acid According to the Brønsted–Lowry theory (proposed in 1923 by both J. N. Brønsted in Copenhagen and T. M. Lowry in Cambridge, who were working independently of one another), a substance that in solution liberates hydrogen ions or protons. The Lewis theory (proposed by G. N. Lewis, also in 1923) states that it is a substance that acts as an electron-pair acceptor. An acid reacts with a base to give a salt and water (neutralization), and has a pH of less than 7.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

MICHAEL ALLABY. "acid." A Dictionary of Ecology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "acid." A Dictionary of Ecology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O14-acid.html

MICHAEL ALLABY. "acid." A Dictionary of Ecology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-acid.html

Learn more about citation styles

acid

World Encyclopedia | 2005 | Copyright

acid Chemical compound containing hydrogen that can be replaced by a metal or other positive ion to form a salt.

Acids dissociate in water to yield aqueous hydrogen ions (H+), thus acting as proton donors. The solutions are corrosive and have a pH below 7. Strong acids, such as sulphuric acid, are fully dissociated into ions, making good electrolytes that conduct electricity. Weak acids, such as ethanoic acid, only partially dissociate. See also base
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"acid." World Encyclopedia. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"acid." World Encyclopedia. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O142-acid.html

"acid." World Encyclopedia. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-acid.html

Learn more about citation styles

acid

A Dictionary of Zoology | 1999 | | Copyright

acid According to the Brønsted–Lowry theory, a substance that in solution liberates hydrogen ions (protons). The Lewis theory states that it is a substance that acts as an electron-pair acceptor. An acid reacts with a base to give a salt and water (neutralization), and has a pH of less than 7.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

MICHAEL ALLABY. "acid." A Dictionary of Zoology. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "acid." A Dictionary of Zoology. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O8-acid.html

MICHAEL ALLABY. "acid." A Dictionary of Zoology. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-acid.html

Learn more about citation styles

acid

A Dictionary of Earth Sciences | 1999 | | Copyright

acid According to the Brønsted-Lowry theory, a substance that in solution liberates hydrogen ions or protons. The Lewis theory states that it is a substance that acts as an electron-pair acceptor. An acid reacts with a base to give a salt and water (neutralization), and has a pH of less than 7.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

AILSA ALLABY and MICHAEL ALLABY. "acid." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "acid." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O13-acid.html

AILSA ALLABY and MICHAEL ALLABY. "acid." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-acid.html

Learn more about citation styles

acid

A Dictionary of Plant Sciences | 1998 | | Copyright

acid According to the Brønsted-Lowry theory, a substance that in solution liberates hydrogen ions or protons. The Lewis theory states that it is a substance that acts as an electron-pair acceptor. An acid reacts with a base to give a salt and water (neutralization), and has a pH of less than 7.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

MICHAEL ALLABY. "acid." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "acid." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-acid.html

MICHAEL ALLABY. "acid." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-acid.html

Learn more about citation styles

acid

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

acid XVII. — F. acide or L. acidus, f. IE. *ak- be pointed or sharp, as in L. acēre be sharp, acus needle, etc.; see -ID1.
So acidity XVII. — F. — late L. acidulated XVIII. f. L. acidulus sourish (whence acidulous XVIII); see -ATE3.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

T. F. HOAD. "acid." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "acid." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-acid.html

T. F. HOAD. "acid." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-acid.html

Learn more about citation styles

acid

A Dictionary of Nursing | 2008 | Copyright

acid (ass-id) n. a substance that releases hydrogen ions when dissolved in water, has a pH below 7 and turns litmus paper red, and reacts with a base to form a salt and water only. Compare base.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"acid." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"acid." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-acid.html

"acid." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-acid.html

Learn more about citation styles

acid

A Dictionary of Food and Nutrition | 2005 | | Copyright

acid Chemically, compounds that dissociate (ionize) in water to give rise to hydrogen ions (H+); they taste sour. See also alkali; amino acids; buffers; esters; fatty acids; pH; salt.
Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

DAVID A. BENDER. "acid." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

DAVID A. BENDER. "acid." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O39-acid.html

DAVID A. BENDER. "acid." A Dictionary of Food and Nutrition. 2005. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O39-acid.html

Learn more about citation styles

ACID

A Dictionary of the Internet | 2001 | | Copyright

Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

DARREL INCE. "ACID." A Dictionary of the Internet. 2001. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

DARREL INCE. "ACID." A Dictionary of the Internet. 2001. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O12-ACID.html

DARREL INCE. "ACID." A Dictionary of the Internet. 2001. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O12-ACID.html

Learn more about citation styles

acid

Oxford Dictionary of Rhymes | 2007 | Copyright

acid •arid, married •Alfred • Manfred • acrid • Astrid •serried, unburied, viverrid •varied • sacred • hatred • mirid •Mildred • kindred • Wilfred • Ingrid •Winifred • hybrid •florid, forehead, horrid, torrid •storied • Mordred • putrid •hurried, unworried •unwearied • lurid • ascarid •unsalaried • liveried •Abbasid, acid, antacid, flaccid, Hasid, placid •alcid •rancid, unfancied •deuced, lucid, pellucid, Seleucid •cussed • cursed

Show all research tools

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"acid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

"acid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-acid.html

"acid." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-acid.html

Learn more about citation styles

Free newspaper and magazine articles

Acids in coffee.(Coffee Chemistry)
Magazine article from: Tea &amp; Coffee Trade Journal; 2/10/2012
Fatty acids: the dangerous and the not so dangerous.
Magazine article from: Medical Laboratory Observer; 11/1/1997
Sulfuric acid is suddenly scarce and expensive.
Magazine article from: Purchasing; 9/13/2007

Facts and information from other sites

Pictures from Google Image Search

Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture

See more pictures of acid

Related topics

  Be the first to connect related topics with this page!