An Epitome of Chemistry: In Three Parts |
Contents
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Common terms and phrases
acetic acetic acid acid gas adding alcohol alkali alumine ammonia apparatus arsenic ascertained atmosphere azotic barytes blue boiling water bottle burns caloric carbonate of potash carbonic acid charcoal chemical colour combination combustion compound contains cooling copper crucible crystals decomposed diluted dissolved earths effervescence Engliſh ensue ether evaporated experiment exposed Fahrenheit filter furnace gallic acid gases gentle heat glass glucine grains hydrogen hydrogen gas inflammable insoluble Klaproth lime liquid liquor magnesia manganese matter mercury metal mineral mixed mixture muriatic acid nitrate nitre nitric acid nitrous gas obtained ounce oxalic oxalic acid oxide of iron oxydized oxygen gas oxygenized muriatic phosphorus plate platina portion powder precipitate properties proportion prussiate of potash pure potash quantity retort salt saturated SECT separated silver smell soil soluble solution of pure specific gravity strontites substance sulphuric acid temperature tion tube vegetable vessel washed weight zinc zircon
Popular passages
Page 144 - period of intoxication. Great exhilaration, an irresistible propensity to laughter, a rapid flow of vivid ideas, and an unusual fitness for muscular exertion, are the ordinary feelings it produces. These pleasant sensations, it must be added, are not succeeded, like those accompanying the grosser elevation from fermented liquors, by any subsequent depression of nervous energy.
Page 379 - essential to their productiveness, ought to be much greater in warm and dry countries, than in cold and moist ones ; and the quantity of fine aluminous earth they contain larger. Soils, likewise, that are situated on declivities, ought to be more absorbent than those in the same climate on plains or in
Page 163 - in the air. It is very soluble in water and in alcohol. It is decomposed by heat, and by the saliva of the mouth. The gallic acid, poured into the solution, precipitates, if it be free from iron, a white powder. Carbonate of ammonia gives a precipitate, which is re-dissolved by an excess of the carbonate. ART.
Page 54 - bent end uppermost, into an inverted jar of gas. When the finger is removed, the quicksilver falls from the tube into the trough, or into a cup placed to receive it, and the tube is filled with the gas. The whole of the quicksilver, however, must not be allowed to escape ; but a column
Page 369 - 4. Mode of collecting Soils for Analysis. In cases when the general nature of the soil of a field is to be ascertained, specimens of it should be taken from different places, two or three inches below the surface, and examined as to the similarity of their properties. It sometimes happens, that upon plains the whole
Page 369 - the upper stratum of the land is of the same kind, and in this case, one analysis will be sufficient ; but in vallies, and near the beds of rivers, there are very great differences, and it now and then occurs that one part of a field is calcareous, and another part
Page 98 - put a little powdered marble or chalk, and pour on this sulphuric acid, diluted with five or six times its weight of water. A gas will be produced, which those, who have an opportunity, may receive over mercury ; but a mercurial apparatus is not absolutely essential, since the gas may be collected over water, if used immediately when procured.
Page 36 - 1. Dilute a portion of nitric acid with an equal weight of water ; and, when the mixture has cooled, add to it a quantity of light fresh-fallen snow. On immersing the thermometer in the mixture, a very considerable reduction of temperature will be observed. This is owing to the absorption, and intimate fixation, of the
Page 54 - end, so as to resemble the italic letter /. The point is then immersed in quicksilver, which is drawn into the tube till it is filled, by the action of the mouth. Placing the finger over the aperture at the straight end, the tube is next conveyed through the water, with
Page 22 - the intercluded coloured liquor, being pressed equally in opposite directions, must remain stationary. But if, for instance, the ball which holds a portion of the liquor be warmer than the other, the superior elasticity of the confined air will drive the liquid forwards, and make it rise, in the opposite branch,