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Chromium   Listen
noun
Chromium  n.  (Chem.) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome.






Collaborative International Dictionary of English 0.48








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"Chromium" Quotes from Famous Books



... internal resistance, and a greater electro-motive power than the Bunsen element. Unfortunately, its energy rapidly decreases, and the alteration of the liquid, as well as the large deposit of oxide of chromium that occurs on the positive electrode, prevents its being employed in experiments of quite long duration. Mr. Grenet, it is true, obviated these two defects by first renewing the liquid slowly and continuously, and causing a current of air to bubble ...
— Scientific American Supplement, No. 455, September 20, 1884 • Various

... by first preparing the calico with a solution of potassium bichromate, then exposing the dried calico under a photographic negative, and, after washing, dyeing with alizarin or some similar coloring matter. During the exposure under the negative, the light has reduced and fixed the chromium salt upon certain parts of the fiber as insoluble chromate of chromium (Cr{2}O{3}CrO{3}) in the more protected portions, the bichromate remains unchanged, and is subsequently removed by washing. During the dyeing process, the coloring ...
— Scientific American Supplement, No. 810, July 11, 1891 • Various

... and the metalloids (silicium, titanium, tungsten, chromium, phosphorus, etc.) has occupied a more prominent position in modern metallurgy than manganese, and it is chiefly due to its great affinity for oxygen. When this substance was discovered, more than a century ago (1774), by the celebrated Swedish chemist and mineralogist, Gahn, ...
— Scientific American Supplement, No. 315, January 14, 1882 • Various

... Chromium forms chrome steel, and with the further addition of nickel is called chrome nickel steel. This increases the hardness to a high degree and adds strength without much decrease in ductility. Chrome steels are used for high-speed ...
— Oxy-Acetylene Welding and Cutting • Harold P. Manly

... mining properties on Xosa II are prepared as of today to deliver pig iron, cobalt, zirconium and beryllium in commercial quantities! We require one day's notice to begin delivery of metal other than iron at the moment, because we're short of equipment, but we can furnish chromium and manganese on two days' notice—the ...
— Sand Doom • William Fitzgerald Jenkins

... question with Greece Climate: mild temperate; cool, cloudy, wet winters; hot, clear, dry summers; interior is cooler and wetter Terrain: mostly mountains and hills; small plains along coast Natural resources: petroleum, natural gas, coal, chromium, copper, timber, nickel Land use: arable land: 21% permanent crops: 4% meadows and pastures: 15% forest and woodland: 38% other: 22% Irrigated land: 4,230 km2 (1989) Environment: subject to destructive earthquakes; tsunami occur along southwestern coast Note: strategic location along Strait of ...
— The 1993 CIA World Factbook • United States. Central Intelligence Agency.

... of color, just a refractive blur that told him the wire was there. Colorless reflection. And that meant perfect reflection! The most perfect reflectors reflect little more than 98 per cent of the light incident and the absorption of the two per cent colors those reflectors as copper or gold or chromium. But the imperm wire within that force field that had been flame a moment ...
— Empire • Clifford Donald Simak

... gaseous condition in the burning flames of the sun. Down to the present time the examination of the sun's atmosphere has shown the existence therein of thirty-six known elements. These include sodium, potassium, calcium, magnesium, iron, copper, cobalt, silver, lead, tin, zinc, titanium, aluminium, chromium, silicon, carbon, ...
— Notable Events of the Nineteenth Century - Great Deeds of Men and Nations and the Progress of the World • Various

... a coloring matter prepared from burned china or other clay, oxide of chromium or sulphur, and ...
— Forty Centuries of Ink • David N. Carvalho

... ferrous and ferric oxides by the formulae FeO2, FeO3, and by the analogy of zinc and other basic oxides he regarded these substances as constituted similarly to FeO2, and the acidic oxides alumina and chromium oxide as similar to FeO3. He found, however, that chromic acid, which he had represented as CrO6, neutralized a base containing 1/3 the quantity of oxygen. He inferred that chromic acid must contain only three atoms of oxygen, as did sulphuric acid SO3; consequently ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 - "Chtelet" to "Chicago" • Various

... are much more readily available in space, where it is not necessary to fight the gravitational pull of a planet to get them. The stony asteroids average thirty-six per cent oxygen by mass; the rest of it is silicon, magnesium, aluminum, nickel, and calcium, with respectable traces of sodium, chromium, phosphorous manganese, cobalt, potassium, and titanium. The metallic nickel-iron asteroids made an excellent source of export products to ship to Earth, but the stony asteroids ...
— Thin Edge • Gordon Randall Garrett

... these meteoric masses consist, and on which Berzelius has thrown so much light, are the same as those distributed throughout the earth's crust, and are fifteen in number, namely, iron, nickel, cobalt, manganese, chromium, copper, arsenic, zinc, potash, soda, sulphur, phosphorus, and carbon, constituting altogether nearly one third of all the known simple bodies. Notwithstanding this similarity with the primary elements into which inorganic bodies are ...
— COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 • Alexander von Humboldt

... there exists a certain degree of parallelism in the action of certain other substances. We have seen that this holds good in a striking manner with the salts of sodium and potassium. Again, various metallic salts and acids, namely those of silver, mercury, gold, tin, arsenic, chromium, copper, and platina, most or all of which are highly poisonous to animals, are equally so to Drosera. But it is a singular fact that the chloride of lead and two salts of barium were not poisonous to this plant. It is an equally strange fact, that, though acetic and propionic acids are highly ...
— Insectivorous Plants • Charles Darwin



Words linked to "Chromium" :   chromite, chrome, Cr, chromium-plate, chromium steel



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