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acetate alcohol alkaline hydrates aluminium ammonia antimony arsenic arsenious oxide atom of oxygen atoms of hydrogen barium becomes boiling bromine burns calcium called carbon atoms carbon dioxide carbon monoxide charcoal color colorless combine combustion composition compound condensed converted cooling copper crystalline cyanide cyanogen decomposed density deposited diatomic dilute disengaged dissolves distilled elements ether ferric ferrocyanide ferrous flame flask formed gases glass heated hydrate hydro hydrochloric acid hydrogen atoms hydrogen sulphide insoluble iodide iodine iron lead lime liquid magnesium manufacture mass matter melts mercury metal methyl mineral mixed mixture molecules of water nitric acid nitrogen obtained odor oxalate oxygen pass phosphorus platinum potassium carbonate potassium chlorate potassium ferrocyanide potassium hydrate powder precipitate radical reaction replaced salt silicate small quantity sodium carbonate sodium hydrate soluble in water solution of potassium substance sulphate sulphur dioxide sulphuric acid temperature tube vapor volume water of crystallization zinc
Seite 39 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Seite 41 - ... part in a chemical reaction. When a compound is formed, the atoms of two or more different elements unite to form a molecule, the smallest piece of a compound which can exist. A molecule of common salt, for example, contains one atom of sodium and one atom of chlorine; a molecule of water contains two atoms of hydrogen and one atom of oxygen; and a molecule of sugar contains twelve atoms of carbon, twenty-two of hydrogen, and eleven of oxygen. If, now, all the atoms of an element are identical...
Seite 238 - The yellowish precipitate is repeatedly dissolved in muriatic acid and precipitated with potash ; when sufficiently purified, it forms a precipitate consisting of microscopic four-sided prisms. This body is difficult of solution in cold water, but dissolves readily in hot water and in alcohol. On platinum foil it burns with a strongly sooty flame. The Compound of this Body with Muriatic Acid, C24H»(NH2) S2O4, HC1, forms reddish, four-sided prisms; it is readily soluble in water, and the solution...
Seite 93 - Water .—Water, as has been already stated, i:.s formed by the union of two volumes of hydrogen and one of oxygen, or by weight, of 8 parts of oxygen to 1 of hydrogen. The composition of water by measure and by weight, upon which, as a basis, the...
Seite 281 - Zinc has markedly different properties at different temperatures. At ordinary temperatures it is quite brittle; at 100-150° it can be rolled out in sheets, but above 200° it becomes brittle again. In dry air it does not change. When heated in the air it takes fire, and burns with a bluish flame, forming zinc oxide. This has been seen in the experiments with the oxyhydrogen blow-pipe.