define:minerals,ore,gangue,malleable,ductile,anode,amalgum,galvanication,calciration,roasting
Answers
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Malleability: It is the property of metals by which metals can be converted into thin sheets by using a hammer.
Ductility: It is the property of metals by which metals can be drawn into thin wires.
Minerals: The naturally occurring compounds of elements are known as minerals.
Ores: The mineral from which element can be extracted easily and profitably is called an ore.
Gangue: The impurities present in the ore such as sand, rocks etc are known as gangue.
Calcination: It is the process of heating concentrated ore in the absence of air below its meting point.
Metallurgy: �It is the process in which pure metals are extracted from their ores.
Concentration of ores: It is the process in which the unwanted impurities (gangue) are removed from the ores.
Alloy: Alloy is the homogeneous mixture of two or more metals or metal and non-metal.
Amalgam: Those alloys in which one of the metals is mercury.
Aqua regia: Aqua regia is Latin word which means �Royal Water�. It is the mixture of concentrated Hydrochloric acid and concentrated nitric acid in the ratio of 3:1. It is capable of dissolving metals like Gold and Platinum.
Galvanisation: It is a method by which iron and steel can be prevented from rusting. In this method a thin layer of Zinc is made on the article which prevents them from rusting.
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Minerals naturally occurring compounds of element
Ore mineral from which an element can be extracted easily and profitably