The book History of Chemistry was written by author Thorpe, T. E. (Thomas Edward), Sir, 1845-1925 Here you can read free online of History of Chemistry book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is History of Chemistry a good or bad book?
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i and freezes at - 187°. g. The spectrum of the gas is exceedingly com- plicated, consisting of a great number of lines extending throughout the visible portion and far into the extreme red and ultra-violet. The colour of the light emitted on sparking the gas changes with increase of temperature from a brilliant red to a bright blue — depending on the THE INACTIVE ELEMENTS 37 intensity of the discharge. All attempts to induce argon to enter into combination with other substances have failed. Th...e methods of its preparation show that it does not combine with oxygen, although Troost and Ouvrard state that it unites with magnesium vapour. It forms no compounds with hydrogen, chlorine, phos- phorus, sulphur, sodium, tellurium, etc. Even fluorine, probably the most generally active of the chemical elements, shows no tendency to unite with it. In 1888 Dr. Hillebrand, of the U. S. Geological Survey, in examining a form of uraninite known as cleveite, so named from the late Professor Cleve, found that on treatment with dilute sulphuric acid it gave off considerable quantities of a gas which was assumed to consist only of nitrogen, as it gave the spectroscopic reactions of that element.
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