Selected Educational Motion Pictures a Descriptive Encyclopedia
Selected Educational Motion Pictures a Descriptive Encyclopedia
American Council On Education Committee On Motion
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The process of reduction is demonstrated by passing hydrogen over iron rust in a combustion tube. Water forms in the tube. The formation of metallic iron is demonstrated by showing that it is attracted by a magnet. As a coke oven is shown, the commentator says that coke is also a reducing agent. An animated cross section of a blast furnace is accompanied by an explanation of this industrial application of a reduction reaction. That magnesium is a reducing agent is illustrated by igniting it in ...steam. In this reaction hydrogen is liberated. The ignition of magnesium powder in dry ice results in the reduction of the carbon dioxide and the liberation of black atomic carbon. Scenes of rail welding by the Goldschmidt process illustrate an industrial application of the reducing property of aluminum. The commentator says that the processes of oxidation and reduction are continually going on in the world around us and even in our own bodies. 308. Oysters int-jh-sh ISmin si Eastman 1932 Other sources: Ariz, Buck, 111, Ind, IntFB, LaDptE, Mich, OhioDptE, Wis Appraisal.
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