A Manual of Elementary Chemistry: Theoretical and PracticalH.C. Lea, 1869 - 833 páginas |
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Otras ediciones - Ver todas
Términos y frases comunes
action alkaline aluminium ammonia ammonium anhydrous antimony apparatus aqueous arsenic atmosphere Atomic weight barium becomes bodies boiling bromide calcium called carbon dioxide carbonic acid caustic charcoal chemical chloride cobalt cold color colorless combination combustion composition compounds condensed containing cooling copper crystalline crystals decomposed decomposition density dilute dissolves easily electrical elements excess flame fluoride forms fused gases glass hydrate hydrochloric acid hydrogen sulphide ignition inches insoluble iodide iodine iron isomorphous latter liquid magnesium magnetic manganese melted mercury metal mixed mixture molecules monoxide nitrate nitric acid nitrogen obtained oil of vitriol oxide oxygen passing phosphate phosphorus plate platinum potash potassium potassium chloride precipitate prepared pressure prisms produced proportion pure quantity rays red heat sal-ammoniac sesquioxide silicate silicium silver sodium carbonate solid soluble in water solution specific gravity substance sulphate sulphuric acid surface temperature tetroxide thallium tion tube uranic vapor vessel volatile volume wire yellow yields zinc
Pasajes populares
Página 28 - It is better, on this account, in graduating the bottle, to make two scratches as represented in the drawing, one at the top and the other at the bottom of the curve : this prevents any future mistake.
Página 75 - In this manner it was found that the heat required to raise the temperature of a pound of water by 1° F. is equivalent to 1034 times the force expended in raising a pound weight one foot high, or to 1034 "foot pounds," as it is technically expressed.
Página 81 - The prcduction and consumption of heat which accompany changes in the state of aggregation, or of the volume of bodies, are easily explained, according to the preceding principles, by taking account of the work done by the acting forces'.
Página 594 - This is secured by its being washed in a stream of water for several weeks. Subsequently a weak solution of potash may be used, but this is not essential. The prolonged continuance of these processes...
Página 27 - In order to obtain at pleasure the specific gravity of any particular liquid compared with that of water, it is only requisite to weigh equal bulks at the standard temperature, and then divide the weight of the liquid by the weight of the water; the quotient will of course be greater or less limn unity, as the liquid experimented on is heavier or lighter than water.
Página 30 - Since the loss of weight of a solid submerged in water is equal to the weight of the volume of water displaced...
Página 221 - Hydrogen and chlorine unite in the proportion of 1 part, by weight, of the former, to 35-5 parts of the latter, and in no other. The same quantity of chlorine combines with 39-1 parts of potassium, 23 of sodium, and 108 of silver. These several quantities of sodium, potassium, and silver, are capable of saturating the same quantity of chlorine that ia saturated by 1 part of hydrogen.
Página 228 - If the smallest volume of a gaseous clement that can enter into combination be called the combining volume of that element, the law of combination may be expressed as follows: The combining volume* of all elementar'/ gases are equal, excepting those of phosphorus and arsenic, which are only half those of the other elements in the gaseous slate, and those of mercury and cadmium, which are double those of the other elements.
Página 140 - Lenarto has no doubt come from such an atmosphere, in which hydrogen greatly prevailed. This meteorite may be looked upon as holding imprisoned within it, and bearing to us, the hydrogen of the stars.
Página 151 - It is necessary to bear this in mind in order to understand why the air which is absorbed by water out of the atmosphere differs in composition from atmospheric air.