Dictionary » A » Acid

Acid

Acid

(Science: chemical, chemistry) a fundamental category of many compounds whose water-based solutions have a sour taste, turn blue litmus paper red and can combine with metals to form salts.

They are chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or which react with bases to form salts and water (neutralization).

An extension of the term includes substances dissolved in media other than water. Specific types of acids include:

Arrhenius acid: any chemical that increases the number of free hydrogen ions (H_) when added to a water-based solution. The more free hydrogens produced, the stronger the acid.

Bronsted or Bronsted-Lowry acid: any chemical that acts as a proton donor in a chemical reaction.

lewis acid: any chemical that accepts two electrons to form a covalent bond during a chemical reaction. Containing acid; an acid taste.Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt.Substances that have a ph of lower than 7 (neutral) that can dissolve in water.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Newbie question about the first life

... caused by lightning and meteors, but to a much lesser extent). Monomers started to come together and assemble polymers. These were 1) nucleic acids, which now both carry and pass on hereditary information, and 2) proteins, which can be either a) structural elements (building blocks for organic ...

See entire post
by piscilactovegetarian
Tue Feb 25, 2014 10:21 am
 
Forum: Molecular Biology
Topic: Newbie question about the first life
Replies: 14
Views: 713

preparation of Carboxymethyllysine (CML)

Hi, Preparation of CML as a major Advanced Glycation Endproducts in the lab is too critical, we usually use BSA and glyoxalic acid, and we add NaCNBH3 to the mixture. Does anyone know why we add NaCNBH3 to prepare CML? Thanks.

See entire post
by ALJOHI
Thu Jan 02, 2014 3:41 pm
 
Forum: Cell Biology
Topic: preparation of Carboxymethyllysine (CML)
Replies: 1
Views: 562

Streptococcus sanguis??

Hey guys have i correctly matched up my micro - organism? Gram reaction:+ Shape: cocci Acid-fast: - Spores: - Motility: - Grows in air: + Grows anaerobically: + Catalase: - Oxidase: - Acid from glucose: + OF test: : F Gas from glucose: - Acid from sucrose: + Acid from ...

See entire post
by microbiologyhelp
Fri Dec 20, 2013 10:08 pm
 
Forum: Microbiology
Topic: Streptococcus sanguis??
Replies: 1
Views: 808

Re: When does gluconeogenesis kick in during physical activity?

... place in liver where glucose is synthesised and transported to peripheral tissues where is it utilised. And it uses alanine as the solely amino acid, because it's freely exchangeable with pyruvate and lactate.

See entire post
by JackBean
Fri Dec 13, 2013 12:14 pm
 
Forum: Human Biology
Topic: When does gluconeogenesis kick in during physical activity?
Replies: 12
Views: 2483

ID OF UNKNOWN?!?!

... guys, I'm needing help trying to identify my organism in microbiology classes, so far the results obtained indicate Gram reaction:+ Shape: cocci Acid-fast: - Spores: - Motility: - Grows in air: + Grows anaerobically: + Catalase: - Oxidase: - Acid from glucose: + OF test: : F Gas from glucose: ...

See entire post
by microbiologyhelp
Fri Dec 06, 2013 10:59 am
 
Forum: Microbiology
Topic: ID OF UNKNOWN?!?!
Replies: 5
Views: 1358
View all matching forum results

This page was last modified 05:47, 9 July 2006. This page has been accessed 36,739 times. 
What links here | Related changes | Permanent link