The Essentials of medical chemistry and urinalysis - Samuel Elisha Woody, Paperback

• Release Date   5/19/2012
• ISBN-13   9781236224910 | 978-1-236-22491-0
• ISBN   1236224914 | 1-236-22491-4
• Format   Paperback
• Author(s)   Samuel Elisha Woody
• This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ...chloride of cobalt is invisible until warmed, when it becomes blue, the color disappearing when the paper is cooled or moistened. Test for Cobalt.--It imparts a deep blue color to a bead of glass or borax melted in the blow-pipe flame. NICKEL.--This is a hard, grayish-white metal that does not tarnish in the air. Used to electro-plate instruments made of metals more prone to corrode, and to make cheap coin. Mixed with brass, it forms German silver.. XI. The Copper Group. Copper (Cuprum), Cu 63.4 Mercury (Hydrargyrum),.. Hg 200 Each of these elements is univalent and bivalent, forming two classes of compounds, "ous" and "ic." At ordinary temperatures they are acted upon but slowly by the non-oxidizing acids, as H2S04 and HCl. but HNO3 attacks them vigorously. COPPER is usually found combined with sulphur, etc., but often in the metallic state, especially on the southern shores of Lake Superior. Being found free, it was among the first metals wrought by man, so the bronze preceded the iron age. Copper is a red malleable metal. an excellent conductor of electricity. Cupr1c Sulphate--CuS04--Blue Vitriol, Blue Stone.--Obtained as an incidental product from silver refineries, copper mines, etc.. made experimentally by heating copper with strong H2S04. Forms beautiful blue crystals, soluble in water, but insoluble in alcohol. If the crystals be heated they lose their water of crystallization and form a white powder, which becomes blue again upon the addition of water. Hence, used as a test for water in alcohol. Like other salts in which the acidulous radical predominates, cupric sulphate is astringent and coagulates albumen. A prompt emetic, but not used as much as ZnSO4, because if, by chance, it be not all ejected from the stomach, a gastro-e...