Definition of Acids. Meaning of Acids. Synonyms of Acids
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Definition of Acids
AcidAcid Ac"id, n.
1. A sour substance.
2. (Chem.) One of a class of compounds, generally but not
always distinguished by their sour taste, solubility in
water, and reddening of vegetable blue or violet colors.
They are also characterized by the power of destroying the
distinctive properties of alkalies or bases, combining
with them to form salts, at the same time losing their own
peculiar properties. They all contain hydrogen, united
with a more negative element or radical, either alone, or
more generally with oxygen, and take their names from this
negative element or radical. Those which contain no oxygen
are sometimes called hydracids in distinction from the
others which are called oxygen acids or oxacids.
Note: In certain cases, sulphur, selenium, or tellurium may
take the place of oxygen, and the corresponding
compounds are called respectively sulphur acids or
sulphacids, selenium acids, or tellurium acids.
When the hydrogen of an acid is replaced by a positive
element or radical, a salt is formed, and hence acids
are sometimes named as salts of hydrogen; as hydrogen
nitrate for nitric acid, hydrogen sulphate for
sulphuric acid, etc. In the old chemistry the name acid
was applied to the oxides of the negative or
nonmetallic elements, now sometimes called anhydrides. AcidAcid Ac"id, a. [L. acidus sour, fr. the root ak to be sharp:
cf. F. acide. Cf. Acute.]
1. Sour, sharp, or biting to the taste; tart; having the
taste of vinegar: as, acid fruits or liquors. Also fig.:
He was stern and his face as acid as ever. --A.
2. Of or pertaining to an acid; as, acid reaction.
Meaning of Acids from wikipedia
bond with an electron
pair (a Lewis acid
). The first category
is the proton donors
or Brønsted acids
. In the special
case of aqueous
in the side chains
of certain amino acids
500 naturally occurring amino acids
(though only 20 appear
in the genetic
fat" and "oily acid
"). Fatty acids differ
by length, often categorized
to very long. Short-chain fatty acids
(SCFA) are fatty acids
- large) molecule. Carboxylic acids occur
widely. Important examples include
the amino acids
(which make up proteins) and acetic acid
(which is part of vinegar)...
- Nucleic acids
are the biopolymers, or small
to all known forms
of life. The term nucleic acid
is the overall
name for DNA and...
- fatty acids
via the glycolytic
pathway. The glycolytic pathway
with which three fatty acids
- are more polarizable. typical
: H+, alkali/alkaline earth metal
cations, boranes, Zn2+ typical
: Ag+, Mo(0), Ni(0), Pt2+ typical
, especially strong acids
pH < 0, the H0 value
is a better measure
than the pH. A strong acid
is an acid
- An organic acid
is an organic compound
properties. The most common organic acids
are the carboxylic acids
, whose acidity
is ****ociated with...
- Bile acids
are steroid acids found predominantly
in the bile of mammals
vertebrates. Different molecular forms
of bile acids
can be synthesized...
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