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Carbon compounds
(gcide) | Compound \Com"pound\, n.
1. That which is compounded or formed by the union or mixture
of elements ingredients, or parts; a combination of
simples; a compound word; the result of composition.
--Shak.
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Rare compound of oddity, frolic, and fun.
--Goldsmith.
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When the word "bishopric" was first made, it was
made as a compound. --Earle.
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2. (Chem.) A union of two or more ingredients in definite
proportions by weight, so combined as to form a distinct
substance; as, water is a compound of oxygen and hydrogen.
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Note: Every definite chemical compound always contains the
same elements, united in the same proportions by
weight, and with the same internal arrangement.
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Binary compound (Chem.). See under Binary.
Carbon compounds (Chem.). See under Carbon.
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Carbon compounds
(gcide) | Carbon \Car"bon\ (k[aum]r"b[o^]n), n. [F. carbone, fr. L. carbo
coal; cf. Skr. [,c]r[=a] to cook.] (Chem.)
1. An elementary substance, not metallic in its nature, which
is present in all organic compounds. Atomic weight 11.97.
Symbol C. it is combustible, and forms the base of
lampblack and charcoal, and enters largely into mineral
coals. In its pure crystallized state it constitutes the
diamond, the hardest of known substances, occuring in
monometric crystals like the octahedron, etc. Another
modification is graphite, or blacklead, and in this it is
soft, and occurs in hexagonal prisms or tables. When
united with oxygen it forms carbon dioxide, commonly
called carbonic acid, or carbonic oxide, according to the
proportions of the oxygen; when united with hydrogen, it
forms various compounds called hydrocarbons. Compare
Diamond, and Graphite.
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2. (Elec.) A carbon rod or pencil used in an arc lamp; also,
a plate or piece of carbon used as one of the elements of
a voltaic battery.
[Webster 1913 Suppl.]
3. a sheet of carbon paper.
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4. a carbon copy.
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Carbon compounds, Compounds of carbon (Chem.), those
compounds consisting largely of carbon, commonly produced
by animals and plants, and hence called organic compounds,
though their synthesis may be effected in many cases in
the laboratory.
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The formation of the compounds of carbon is not
dependent upon the life process. --I. Remsen
carbon copy, originally, a copy of a document made by use
of a carbon paper, but now used generally to refer to
any copy of a document made by a mechanical process, such
as xerographic copying.
Carbon dioxide, Carbon monoxide. (Chem.) See under
Carbonic.
Carbon light (Elec.), an extremely brilliant electric light
produced by passing a galvanic current through two carbon
points kept constantly with their apexes neary in contact.
Carbon point (Elec.), a small cylinder or bit of gas carbon
moved forward by clockwork so that, as it is burned away
by the electric current, it shall constantly maintain its
proper relation to the opposing point.
Carbon paper, a thin type of paper coated with a
dark-colored waxy substance which can be transferred to
another sheet of paper underneath it by pressing on the
carbon paper. It is used by placing a sheet between two
sheets of ordinary writing paper, and then writing or
typing on the top sheet, by which process a copy of the
writing or typing is transferred to the second sheet
below, making a copy without the need for writing or
typing a second time. Multiple sheets may be used, with a
carbon paper placed above each plain paper to which an
impression is to be transferred. In 1997 such paper was
still used, particularly to make multiple copies of
filled-in purchase invoice forms, but in most applications
this technique has been superseded by the more faithful
xerographic reproduction and computerized printing
processes.
Carbon tissue, paper coated with gelatine and pigment, used
in the autotype process of photography. --Abney.
Gas carbon, a compact variety of carbon obtained as an
incrustation on the interior of gas retorts, and used for
the manufacture of the carbon rods of pencils for the
voltaic, arc, and for the plates of voltaic batteries,
etc.
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chemistry of the carbon compounds
(gcide) | Chemistry \Chem"is*try\ (k[e^]m"[i^]s*tr[y^]; 277), n. [From
Chemist. See Alchemy.]
1. That branch of science which treats of the composition of
substances, and of the changes which they undergo in
consequence of alterations in the constitution of the
molecules, which depend upon variations of the number,
kind, or mode of arrangement, of the constituent atoms.
These atoms are not assumed to be indivisible, but merely
the finest grade of subdivision hitherto attained.
Chemistry deals with the changes in the composition and
constitution of molecules. See Atom, Molecule.
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Note: Historically, chemistry is an outgrowth of alchemy (or
alchemistry), with which it was anciently identified.
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2. An application of chemical theory and method to the
consideration of some particular subject; as, the
chemistry of iron; the chemistry of indigo.
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3. A treatise on chemistry.
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Note: This word and its derivatives were formerly written
with y, and sometimes with i, instead of e, in the
first syllable, chymistry, chymist, chymical, etc., or
chimistry, chimist, chimical, etc.; and the
pronunciation was conformed to the orthography.
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Inorganic chemistry, that which treats of inorganic or
mineral substances.
Organic chemistry, that which treats of the substances
which form the structure of organized beings and their
products, whether animal or vegetable; -- called also
chemistry of the carbon compounds. There is no
fundamental difference between organic and inorganic
chemistry.
Physiological chemistry, the chemistry of the organs and
tissues of the body, and of the various physiological
processes incident to life.
Practical chemistry, or Applied chemistry, that which
treats of the modes of manufacturing the products of
chemistry that are useful in the arts, of their
applications to economical purposes, and of the conditions
essential to their best use.
Pure chemistry, the consideration of the facts and theories
of chemistry in their purely scientific relations, without
necessary reference to their practical applications or
mere utility.
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