Conversations on Chemistry: In which the Elements of that Science are Familiarly Explained and Illustrated by Experiments, and Sixteen Copper-plate Engravings : to which are Now Added, Explanations of the Text--questions for Exercise--directions for Simplifying the Apparatus, and a Vocabulary of Terms--together with a List of Interesting Experiments ; by J.L. Comstock

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Oliver D. Cooke, 1822 - Chemistry - 383 pages

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Page ii - IDE, of the said District, hath deposited in this office, the title of a book, the right whereof he claims as proprietor, in the words following, to wit : " Inductive Grammar, designed for beginners. By an Instructer." In conformity to the act of the Congress of the United States...
Page ii - An act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprietors of such copies during the times therein mentioned,' and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Page 1 - Can the studiss which we have lately pursued, the general properties of matter, or the revolutions of the heavenly bodies, be compared to the mixing up of a few insignificant drugs ? I grant, however, there may be...
Page 9 - ... body of the same kind as the particles of which it is formed ; whilst the attraction of composition, by combining particles of a dissimilar nature, produces compound bodies, quite different from any of their constituents. If, for instance, I pour on the piece of copper contained in this glass, some of this liquid (which is called nitric acid), for which it has a strong attraction, every particle of the copper will combine with a particle of acid, and together they will form a new body, totally...
Page 349 - Salt. A substance formed by the union of an acid with an alkali, an earth, or a metallic oxide, in such proportions as to saturate both the base and the acid.
Page 365 - ... with liquid ammonia, and stop the phial so as to exclude all atmospheric air. If left in this state, no solution of the copper will be effected. But if the bottle be afterwards left open for some time, and then stopped, the metal will dissolve, and the solution will be colourless.
Page 50 - This precipitation is owing, I suppose, to the cooling of the atmosphere, which prevents its retaining so great a quantity of watery vapour in solution as during the heat of the day. Mrs. B. Such was, from time immemorial, the generally received opinion respecting the cause of dew ; but it has been very recently proved by a course of ingenious experiments of Dr. Wells, that the deposition of dew is produced by the cooling of the surface of the earth, which he has shown to take place previously to...
Page 353 - Stalactites. Certain concretions of calcareous earth found suspended like icicles in caverns. They are formed by the oozing of water, through the crevices, charged with this kind of earth. Steatites. A kind of stone composed of silex, iron, and magnesia. Also called French chalk, Spanish chalk, and soaprock. Sub-Salts. Salts with less acid than is sufficient to neutralize their radicals. Suberates.
Page 20 - The inconvenience is but very trifling, because the different gradations of the scales do not affect the principle upon which thermometers are constructed. When we know, for instance, that Fahrenheit's scale is divided into 212 degrees, in which 32 corresponds with the freezing point, and 212 with the point of boiling water ; and that Reaumur's is divided only into 80 degrees, in which 0 denotes the freezing point, and 80 that of boiling water, it is easy to compare the two scales together,...
Page 352 - Receivers. Globular glass vessels adapted to retorts for the purpose of preserving and condensing the volatile matter raised in distillation. Rectification, is nothing more than the re-distilling a liquid to render it more pure, or more concentrated, by abstracting a part of it only. Reduction. The restoration of metallic oxides to (heir original state of metals ; which is usually effected by means of charcoal and fluxes.

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