A Dictionary of chemistry and the allied branches of other sciences v. 2, 1864, Volume 2Longmans, Green, and Company, 1864 |
Expressions et termes fréquents
according acetic acid action alkalis ammonia ammonium anhydrous aqueous solution atoms barium battery blue boiling bromide calcium carbonic anhydride cent charcoal Chem chloride of cyanogen colour colourless compound conductor containing converted cooling copper crystallises crystals cupric cupric oxide cuprous cyanate cyanic acid cyanide cyanide of potassium cyanogen cyanuric decomposed decomposition deposits dilute dissolves distillation electricity ether ethylamine ethylene evaporated excess faces ferric ferrocyanide ferrocyanide of potassium forms formula heated hydrate hydrochloric acid hydrocyanic acid hydrogen insoluble iodide of ethyl iron likewise liquid mass melts metal mixed mixture needles nitrate nitric acid nitrogen obtained odour oxalic oxide oxygen passing Pharm Phys platinum Pogg potash potassium precipitate prisms produced radicle reaction residue resin salt separated silver small quantity sodium soluble in water specific gravity substance sulphate sulphide sulphuric acid sulphydric surface temperature triethylamine tube vapour wire Wöhler yellow yields zinc
Fréquemment cités
Page 296 - C. It is almost insoluble in water, but soluble in all proportions in alcohol and ether.
Page 350 - ... if more alkali were present than is sufficient to convert the yolk into soap, it would attack the wool itself. Putrid urine is therefore generally used, as being cheap, and containing a volatile alkali, which, uniting with the grease, renders it soluble in water. Silk, when taken from the cocoon, is covered with a kind of varnish, which, because it docs not easily yield either to water or alcohol, is usually said to be soluble in neither.
Page 405 - ... which again speedily appears by cooling the passages so as to restore the water which is necessary for the production of that effect. The phenomenon of the evolution of electricity in these circumstances is dependent also on the quality of the fluid in motion, more especially in relation to its conducting power. Water will not excite electricity unless it be pure ; the addition to it of any soluble salt or acid, even in minute quantity, is sufficient to destroy this property.
Page 400 - C (fig. 108.), then no charge will be given to the carrier at/, though when applied nearer to the edge at g, or even above the middle at h, a charge will be obtained ; and this is true though the plate may be a mere thin film of gold-leaf. Hence it is clear that the induction is not through the metal, but through the surrounding air or dielectric, and that in curved lines.
Page 316 - The weight, and consequently the value of diamonds, is estimated in carats, one of which is equal to four grains, and the price of one diamond, compared to that of another of equal colour, transparency, purity, form, &c.
Page 440 - Iodide of potassium (solution). Chloride of silver (fused). Protochloride of tin (fused). Chloride of lead (fused). Iodide of lead (fused). Muriatic acid (solution). Water, acidulated with sulphuric acid.
Page 345 - DUCTILITY. That property or texture of bodies, which renders it practicable to draw them out in length, while their thickness is diminished, without any actual fracture of their parts. This term is almost exclusively applied to metals.
Page 330 - ... system. The red crystals turn yellow when heated, and resume their red tint on cooling. The yellow crystals obtained by sublimation retain their colour when cooled ; but, on the slightest rubbing or stirring with a pointed instrument, the part which is touched turns scarlet, and this change of colour extends with a slight motion, as if the mass were alive, throughout the whole group of crystals as far as they adhere together.
Page 390 - In rarefied oxygen, the form and appearance are better, the colour somewhat purplish, but all the characters very poor compared to those in air. 1458. Nitrogen gives brushes with great facility at the positive surface, far beyond any other gas I have tried : they are almost always fine in form, light, and colour, and in rarefied nitrogen are magnificent. They surpass the discharges in any other gas as to the quantity of light evolved.
Page 310 - Laevotartaric acid forms anhydrous crystals, the aqueous solution of which turns the plane of polarisation of a luminous ray to the left, the rotation being equal and opposite to that produced by dextrotartaric acid.