| slovo | definícia |
Volatile alkali
(gcide) | Volatile \Vol"a*tile\, a. [F. volatil, L. volatilis, fr. volare
to fly, perhaps akin to velox swift, E. velocity. Cf.
Volley.]
1. Passing through the air on wings, or by the buoyant force
of the atmosphere; flying; having the power to fly. [Obs.]
[1913 Webster]
2. Capable of wasting away, or of easily passing into the
aeriform state; subject to evaporation.
[1913 Webster]
Note: Substances which affect the smell with pungent or
fragrant odors, as musk, hartshorn, and essential oils,
are called volatile substances, because they waste away
on exposure to the atmosphere. Alcohol and ether are
called volatile liquids for a similar reason, and
because they easily pass into the state of vapor on the
application of heat. On the contrary, gold is a fixed
substance, because it does not suffer waste, even when
exposed to the heat of a furnace; and oils are called
fixed when they do not evaporate on simple exposure to
the atmosphere.
[1913 Webster]
3. Fig.: Light-hearted; easily affected by circumstances;
airy; lively; hence, changeable; fickle; as, a volatile
temper.
[1913 Webster]
You are as giddy and volatile as ever. --Swift.
[1913 Webster]
Volatile alkali. (Old Chem.) See under Alkali.
Volatile liniment, a liniment composed of sweet oil and
ammonia, so called from the readiness with which the
latter evaporates.
Volatile oils. (Chem.) See Essential oils, under
Essential.
[1913 Webster] |
Volatile alkali
(gcide) | Alkali \Al"ka*li\ (?; 277), n.; pl. Alkalis or Alkalies. [F.
alcali, ultimately fr. Ar. alqal[imac] ashes of the plant
saltwort, fr. qalay to roast in a pan, fry.]
1. Soda ash; caustic soda, caustic potash, etc.
[1913 Webster]
2. (Chem.) One of a class of caustic bases, such as soda,
potash, ammonia, and lithia, whose distinguishing
peculiarities are solubility in alcohol and water, uniting
with oils and fats to form soap, neutralizing and forming
salts with acids, turning to brown several vegetable
yellows, and changing reddened litmus to blue.
[1913 Webster]
3. Soluble mineral matter, other than common salt, contained
in soils of natural waters. [Western U. S.]
[Webster 1913 Suppl.]
Fixed alkalies, potash and soda.
Vegetable alkalies. Same as Alkaloids.
Volatile alkali, ammonia, so called in distinction from the
fixed alkalies.
[1913 Webster] |
volatile alkali
(gcide) | ammonia \am*mo"ni*a\ ([a^]m*m[=o]"n[i^]*[.a]), n. [From sal
ammoniac, which was first obtaining near the temple of
Jupiter Ammon, by burning camel's dung. See Ammoniac.]
(Chem.)
A gaseous compound of hydrogen and nitrogen, NH3, with a
pungent smell and taste: -- often called volatile alkali,
and spirits of hartshorn. It is very soluble in water,
forming a moderately alkaline solution, and is used in
aqueous solution as a household cleaning agent, such as for
cleaning grease from glass.
[1913 Webster + PJC] Ammoniac |
| | podobné slovo | definícia |
Volatile alkali
(gcide) | Volatile \Vol"a*tile\, a. [F. volatil, L. volatilis, fr. volare
to fly, perhaps akin to velox swift, E. velocity. Cf.
Volley.]
1. Passing through the air on wings, or by the buoyant force
of the atmosphere; flying; having the power to fly. [Obs.]
[1913 Webster]
2. Capable of wasting away, or of easily passing into the
aeriform state; subject to evaporation.
[1913 Webster]
Note: Substances which affect the smell with pungent or
fragrant odors, as musk, hartshorn, and essential oils,
are called volatile substances, because they waste away
on exposure to the atmosphere. Alcohol and ether are
called volatile liquids for a similar reason, and
because they easily pass into the state of vapor on the
application of heat. On the contrary, gold is a fixed
substance, because it does not suffer waste, even when
exposed to the heat of a furnace; and oils are called
fixed when they do not evaporate on simple exposure to
the atmosphere.
[1913 Webster]
3. Fig.: Light-hearted; easily affected by circumstances;
airy; lively; hence, changeable; fickle; as, a volatile
temper.
[1913 Webster]
You are as giddy and volatile as ever. --Swift.
[1913 Webster]
Volatile alkali. (Old Chem.) See under Alkali.
Volatile liniment, a liniment composed of sweet oil and
ammonia, so called from the readiness with which the
latter evaporates.
Volatile oils. (Chem.) See Essential oils, under
Essential.
[1913 Webster]Alkali \Al"ka*li\ (?; 277), n.; pl. Alkalis or Alkalies. [F.
alcali, ultimately fr. Ar. alqal[imac] ashes of the plant
saltwort, fr. qalay to roast in a pan, fry.]
1. Soda ash; caustic soda, caustic potash, etc.
[1913 Webster]
2. (Chem.) One of a class of caustic bases, such as soda,
potash, ammonia, and lithia, whose distinguishing
peculiarities are solubility in alcohol and water, uniting
with oils and fats to form soap, neutralizing and forming
salts with acids, turning to brown several vegetable
yellows, and changing reddened litmus to blue.
[1913 Webster]
3. Soluble mineral matter, other than common salt, contained
in soils of natural waters. [Western U. S.]
[Webster 1913 Suppl.]
Fixed alkalies, potash and soda.
Vegetable alkalies. Same as Alkaloids.
Volatile alkali, ammonia, so called in distinction from the
fixed alkalies.
[1913 Webster]ammonia \am*mo"ni*a\ ([a^]m*m[=o]"n[i^]*[.a]), n. [From sal
ammoniac, which was first obtaining near the temple of
Jupiter Ammon, by burning camel's dung. See Ammoniac.]
(Chem.)
A gaseous compound of hydrogen and nitrogen, NH3, with a
pungent smell and taste: -- often called volatile alkali,
and spirits of hartshorn. It is very soluble in water,
forming a moderately alkaline solution, and is used in
aqueous solution as a household cleaning agent, such as for
cleaning grease from glass.
[1913 Webster + PJC] Ammoniac |
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