A Manual of Chemistry: On the Basis of Dr. Turner's Elements of Chemistry : Containing, in a Condensed Form, All the Most Important Facts and Principles of the Science : Designed for a Text-book in Colleges and Other Seminaries of LearningThomas, Cowperthwait & Company, 1848 - 480 pagina's |
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A Manual of Chemistry on the Basis of Dr. Turner's Elements of Chemistry ... John Johnston Volledige weergave - 1852 |
A Manual of Chemistry: On the Basis of Dr. Turner's Elements of Chemistry ... John Johnston Volledige weergave - 1847 |
Veelvoorkomende woorden en zinsdelen
absorbed acetic acid gas action affinity alcohol alkalies ammonia animal antimony arsenic atoms baryta bodies boiling burns called carbonic acid charcoal chemical chloric acid chlorine cold color colorless combination combustion composition compound contain cooling copper crystaline crystals decomposed decomposition dilute dissolved distilled electricity Equiv equivalent ether exposed fluid formed fused galvanic gases glass heated to redness hydrate hydrochloric acid hydrogen insoluble iodine iron light lime liquid magnesia magnet manganese matter mercury metallic mineral mixed mixture neutral nitrate nitric acid nitrogen obtained odor oxide oxydized oxygen oxygen gas particles peroxide phosphate phosphorus platinum potassa potassium precipitate prepared prism produced properties proportion protoxide pure quantity rays readily red heat salts sesquioxide silver soda solid soluble in water solution specific gravity substances sulphate sulphuret sulphuric acid surface Symbol temperature thermometer tion tube unite vapor vegetable vessel water of crystalization weight wire zinc
Populaire passages
Pagina 171 - Owing to its peculiarly porous texture, charcoal possesses the property of absorbing a large quantity of air, or other gases, at common temperatures, and of yielding the greater part of them when heated.
Pagina 295 - Brass. Copper and zinc unite in several proportions, forming alloys of great importance in the arts. The best brass consists of four parts of copper to one of zinc ; and, when the latter is in greater proportion, compounds are formed called tombac, Duteh gold and pinchbeck.
Pagina 435 - ... acid with either of those alkalies. That this process should succeed, it is necessary that the iron be wholly in the state of peroxide, that the solution be exactly neutral, which may easily be insured by the cautious use of ammonia, and that the reddish-brown coloured succinate of iron be washed with cold water. Of this succinate, well dried at a temperature of 212' F., 90 parts correspond to 40 of the peroxide.
Pagina 434 - The mixture is afterwards digested in dilute hydrochloric acid, by which means all the ingredients of the mineral, if the decomposition is complete, are dissolved. The solution is next evaporated to dryness, the heat being carefully regulated towards the close of the process, in...
Pagina 295 - ... in order to protect its surface from rusting. For this purpose, pieces of tin are placed upon a well-polished sheet of copper, which, if the process is skilfully conducted, adhere uniformly to its surface. The oxidation of the tin — a circumstance which would entirely prevent the success of the operation — is avoided by employing fragments of resin, or muriate of ammonia, and regulating the temperature with great care.
Pagina 295 - The art of tinning copper consists in covering that metal with a thin layer of tin, in order to protect its surface from rusting. For this purpose, pieces of tin are placed upon a well-polished sheet of copper, which, if the process is skilfully conducted, adhere uniformly to its surface.
Pagina 372 - ... and ammonia is always one of the products of the destructive distillation. They never exist in an insulated state in the plants which contain them ; but are apparently in every case combined with an acid, with which they form a salt more or less soluble in water. These alkalies are for the most part very insoluble in water, and of sparing solubility in "cold alcohol ; but they are all readily dissolved by that fluid at a boiling temperature, being deposited from the solution, commonly in the...
Pagina 439 - ... of ammonia and phosphoric acid. Having thus determined the weight of each of the fixed ingredients, excepting the soda, the loss of course gives the quantity of that alkali ; or it may be procured in a separate state by the process described in the foregoing section. The individual constituent of the water being known, it remains to determine the state in which they were originally combined.
Pagina 178 - Fig. 73. contrivance, which is appropriately termed the safety-lamp, not only prevents explosion, but indicates the precise moment of danger. When the lamp is carried into an atmosphere charged with fire-damp, the flame begins to enlarge ; and the mixture, if highly explosive, takes fire as soon as it has passed through the gauze, and burns on its inner surface, while the light in the centre of the lamp is extinguished.
Pagina 191 - ... appears distinctly luminous in the dark, and is gradually consumed. On this account, phosphorus should always be kept under water. The disappearance of oxygen which accompanies these changes is shown by putting a stick of phosphorus in a jar full of air, inverted over water. The...