Introduction to the Study of Chemical Philosophy: The Principles of Theoretical and Systematic Chemistry

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Longmans, Green, 1876 - 279 pages
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Page 60 - ... been entirely reduced, the tube weighing the same as before passing the oxygen through it. 11. Determine the composition of water by weight by passing dry hydrogen over half an ounce of copper oxide, and collecting the water in a weighed chloride of calcium tube. Show approximately that water contains two parts by weight of hydrogen to sixteen parts by weight of oxygen. 12. Note the first law of chemical combination : that chemical compounds, Mich as water, always contain their components in...
Page 8 - At temperatures above 88° no apparent liquefaction of carbonic acid, or separation into two distinct forms of matter, could be effected, even when a pressure of 300 or 400 atmospheres was applied. Nitrous oxide gave analogous results.
Page 8 - Fahr., the surface of demarcation between the liquid and gas became fainter, lost its curvature, and at last disappeared. The space was then occupied by a homogeneous fluid, which exhibited, when the pressure was suddenly diminished or the temperature slightly lowered, a peculiar appearance of moving or flickering striae throughout its entire mass.
Page i - TEXT-BOOKS OF SCIENCE, Adapted for the Use of Artisans and Students in Public and Science Schools.
Page 155 - At a still higher temperature it again becomes fluid, and finally boils at 440 C. The density of the vapor then diminishes gradually, until, at 1000° C., a point is reached where it is 32 times as great as that of hydrogen at the same temperature. Sulphur in all its forms is insoluble in water and alcohol, a poor conductor of heat, and a non-conductor of electricity. When heated in the air to 260° C., it takes fire, burning with a pale-blue flame.
Page iii - Introduction to the Study of Chemical Philosophy. The Principles of Theoretical and Systematic Chemistry. By WILLIAM A. TILDEN, D.Sc.
Page 250 - ... soluble in water; alcohol also dissolves it freely, which is the case with comparatively few of the compounds of this base; the solid hydrate of commerce, which is very impure, may thus be purified. The solution of this substance possesses, in the very highest degree, the properties termed alkaline; it restores the blue colour to litmus which has been reddened by an acid ; neutralizes completely the most powerful acids; has a...
Page 121 - Avogadro's hypothesis be true, if equal volumes of all gases contain (under the same conditions of temperature and pressure) the same number of molecules...
Page vii - The molecular theory has been adopted in a somewhat rigid form, not by reason of any special conviction of my own regarding its permanence as a scientific truth, but because I am satisfied by long experience that, whatever form it may ultimately assume, it is even now a most important and almost indispensable aid to teaching chemistry
Page 267 - Every carbon acid may be considered to have been derived from an alcohol by the substitution of an atom of oxygen for two atoms of hydrogen.

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