A manual of chemistry, Band 2 |
Andere Ausgaben - Alle anzeigen
A Manual of Chemistry: Containing the Principal Facts of the Science ... William Thomas Brande,William James Macneven Keine Leseprobe verfügbar - 2015 |
A Manual of Chemistry: Containing the Principal Facts of the Science ... William Thomas Brande Keine Leseprobe verfügbar - 2015 |
Häufige Begriffe und Wortgruppen
added affords alcalis alloy alumina ammonia analysis antimony arsenic arsenic acid baryta bismuth blue boiling brittle brown carbonate of lime carbonate of potassa carbonic acid charcoal Chlorate chloride cobalt colour combined compound consists contains copper crucible crystalline crystals decomposed deliquescent difficultly digested dilute dissolved dried evaporated to dryness evolved excess exposed filtered formed fused fusible fusion glass gold grains green grey hydrate hydriodic hydrosulphuret Hyposulphite ignited insoluble iodide lead liquor magnesia manganese mass mercury mineral mixed mixture muriatic acid native nickel nitrate nitre nitric acid nitro-muriatic obtained octoëdral oxide oxide of iron oxygen peroxide phosphate Phosphuret platinum portion potassium prisms produces proportional protoxide pure quantity re-dissolved red heat residue salt separated silica sodium soluble in water solution specific gravity strontia substance sulphate of soda sulphuretted hydrogen sulphuric acid taste tellurium temperature thrown washed water at 60 weight white powder white precipitate yellow zinc
Beliebte Passagen
Seite 227 - ... the persons who have .taken up this conjecture, have assumed one impossibility to account for what they conceive to be another, namely, that the stony bodies should come from any other source than our own globe. The notion that these bodies come from the moon, though it has been laughed at as lunacy, is, when impartially considered, neither absurd nor impossible. It is quite true...
Seite 324 - ... required, the bowl of the spoon may be adapted to a hole in the charcoal. Small portions may be taken up by platina forceps. Salts and volatile substances are to be heated in a glass tube closed at one end, and enlarged according to circumstances, so as to form a small matrass.
Seite 15 - Malleability and ductility are usually impaired, and often in a remarkable degree ; thus gold and lead, and gold and tin, form a brittle alloy. The alloy of copper and gold is harder than either of its component parts ; and a minute quantity of arsenic added to copper renders it white. 2. The specific gravity of an alloy is rarely the mean of its component parts ; in some cases an increase, in others a diminution of density having taken place. 3. The fusibility of an alloy is generally greater than...
Seite 268 - The alloy with copper constitutes plate and coin. By the addition of a small proportion of copper to silver, the metal is rendered harder and more sonorous, while its color is scarcely impaired. Even with equal weights of the two metals, the compound is white.
Seite 235 - Physicians. 50 Ibs. of mercury are boiled with 70 Ibs. of sulphuric acid, to dryness, in a cast-iron vessel: 62 Ibs. of the dry salt are triturated with 40| Ibs.
Seite 226 - December, 1795, a stone fell near Major Topham's house, in Yorkshire ; it was seen by a ploughman and two other persons, who immediately dug it out of the hole it had buried itself in ; it weighed 56 Ibs.
Seite 327 - ... not. But it must be observed that the glass of borax sometimes assumes externally a metallic splendour. When the charcoal is cold, that part impregnated with the fused mass should be taken out with a knife, and ground with distilled water in a crystal, or, what is much better, an agate mortar. The soda will be dissolved ; the charcoal will float, and may be poured off; and the metallic particles will remain in the water, and may be examined. In this manner most of the metals may be reduced.
Seite 16 - Alloys having a specific gravity inferior to the mean of their components. Gold and Silver ., Iron „ Lead „ Copper „ Iridium „ Nickel Silver and Copper Copper and Lead Iron and Bismuth „ Antimony „ Lead Tin and Lead „ Palladium „ Antimony Nickel and Arsenic Zinc and Antimony.
Seite 288 - ... a dome-shaped furnace, built upon arches, and open beneath for the free admission of air ; there are generally six in each furnace, and they are entirely enclosed, except at an orifice on the side opening into a small recess formed by the alternate projection of the masonry and the flues, in which the workmen stand. Coal is the fuel employed, and the furnace is so built that a rapid current of flame may be directed round each glass-pot, which afterwards passes out with the smoke into the dome...