Gas and Oil Engines; Management of Stationary Gas Engines; Theoretical Chemistry; Practical Chemistry; Elementary Inorganic Chemistry

Gas and Oil Engines; Management of Stationary Gas Engines; Theoretical Chemistry; Practical Chemistry; Elementary Inorganic Chemistry

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...the gangue by crushing, and hence can be concentrated. S4. General Rule.--As a general rule, it may be stated t/zat in order to concentrate any substance, it must be of such a nature t/zat by crus/zing t/ze mineral it separates in the farm of distinct crystals or distinct pieces. Where minerals are practically of the same hardness and are intimately associated, it is rare that concentration by mechanical means is successful. THEORETICAL CHEMISTRY DEFINITIONS 1. Definition of Chemistry.--Chemistry is that science which treats of the composition of matter, of the changes produced therein by heat and other natural forces, and of the action and reaction of different kinds of matter on each other. 2. Division of Chemistry.--Chemistry is divided into inorgarzic and organic chemistry. Inorganic chemistry may be defined as the chemistry of the elements and their compounds. Organic chemistry is the chemistry of the carbon compounds. These two parts are separated, not because any difference exists in the laws regulating the formation of the bodies classed under these two great divisions, but because the compounds treated under organic chemistry are so numerous and their constitution frequently so complicated, that they are to be studied as a separate subject. Organic chemistry does not enter into metallurgy or mining to any extent, and hence this chemistry is confined to the inorganic compounds with the exception-of the organic minerals. 3. Definition of Matter.--The word matter is used to signify anything that has, weight, or that is acted on by gravitation. Stones, earth, water, and wood, and even gases, -are matter. I 4. Division of Matter.--Science assumes three divisions of matter: masses, molecules. and atums. A mass is any appreciable portion.show more

Product details

  • Paperback
  • 189 x 246 x 10mm | 340g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236917820
  • 9781236917829