A Treatise on Chemistry, 2. kötet,1. részD. Appleton, 1883 |
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added alcohol alkali alloy alum alumina aluminium amalgam ammonia ammonium anhydrous aqueous atomic weight barium basic blue boiling calcium carbon dioxide caustic potash cent cerium Chem cold colour colourless common salt composition compound contains converted cooling copper sulphate crucible crystalline crystals cupel cupric cuprous cyanide decomposed deposited didymium dilute dissolves easily soluble employed erbium evaporated fluoride formed furnace fused glass H₂O heated hydrate hydrochloric acid hydrogen hydroxide ignition insoluble iodide iron Journ lanthanum lead lime liquid lithium magnesium manufacture mass melted mercuric chloride mercury metal mineral mixture nitrate nitric acid obtained occurs oxalate oxide oxygen phosphate porcelain possesses potassium carbonate potassium chloride powder prepared prisms pure reaction readily red-heat residue rhombic rubidium sal-ammoniac separates silicate silver chloride small quantity soda sodium soluble in water specific gravity sublimate substance sulphide sulphuretted hydrogen sulphuric acid temperature thallium vapour volatile washed whilst yellow yields yttrium zinc
Népszerű szakaszok
32. oldal - As he that taketh away a garment in cold weather, and as vinegar upon nitre, so is he that singeth songs to a heavy heart.
55. oldal - Under these circumstances a vivid action was soon observed to take place. The potash began to fuse at both its points of electrization. There was a violent effervescence at the upper surface ; at the lower, or negative surface, there was no liberation of elastic fluid ; but small globules having a high metallic lustre, and being precisely similar in visible characters to quicksilver, appeared, some of which burnt with explosion and bright flame as soon as they were formed, and others remained and...
217. oldal - The strontia flame exhibits a great number of red rays well separated from each other by dark intervals, not to mention an orange and a very definite bright blue ray. The lithia exhibits one single red ray. Hence I hesitate not to say that optical analysis can distinguish the minutest portions of these two substances from each other with as much certainty, if not more, than any other known method.
324. oldal - Petersburg!), has also made a discovery which promises to be of little less importance to the arts. He has found a method — if we understand our informant rightly — of converting any line, however fine, engraved on copper, into a relief, by galvanic process.
324. oldal - DETRIMENTAL to the power of the battery : the copper plate is also covered with a coating of metallic copper, which is continually being deposited ; and so perfect is the sheet of copper thus formed, that, on being stripped off, it has the polish, and even a counterpart of every scratch of the plate on which it is deposited.
364. oldal - Add, drop by drop, stirring all the time with a glass rod, as much liquid ammonia as is just necessary to obtain a clear solution of the grey precipitate first thrown down. Add 4 ounces of solution B.
55. oldal - ... and a platina wire, communicating with the positive side, was brought in contact with the upper surface of the alkali. The whole apparatus was in the open atmosphere. Under these circumstances a vivid action was soon observed to take place. The potash began to fuse at both its points of electrization. There was a violent effervescence at...
240. oldal - ... wire, which, seen from a point at the sea's level, has an apparent magnitude equal to that of the sun, effects on that point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53
365. oldal - Add 4 oz. of solution B. The brown-black precipitate formed must be just redissolved by the addition of more ammonia, as before. Add distilled water, until the bulk reaches 15 oz., and add, drop by drop, some of solution A, until a grey precipitate, which does not redissolve after stirring for three minutes, is obtained ; then add 15 oz. more of distilled water.
55. oldal - ... metallic lustre, and being precisely similar in visible characters to quicksilver, appeared, some of which burnt with explosion and bright flame, as soon as they were formed, and others remained, and were merely tarnished, and finally covered by a white film which formed on their surfaces. "These globules, numerous experiments soon showed to be the substance I was in search of, and a peculiar inflammable principle the basis of potash.