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Cleavage
Cleavage, tendency of a crystalline substance to split into fragments bounded by plane surfaces. Although cleavage surfaces…
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Intelligent design
Intelligent design (ID), argument intended to demonstrate that living organisms were created in more or…
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Intermetallic compound
Intermetallic compound, any of a class of substances composed of definite proportions of two or…
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Silicon carbide
Silicon carbide, exceedingly hard, synthetically produced crystalline compound of silicon and carbon. Its chemical formula is SiC. Since the late…
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Ductility
Ductility, Capacity of a material to deform permanently (e.g., stretch, bend, or spread) in response…
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Phosphorus
Phosphorus (P), nonmetallic chemical element of the nitrogen family (Group 15 [Va] of the periodic table) that at room temperature…
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Silicon
(Group 14 [IVa] of the periodic table). Silicon makes up 27.7 percent of Earth’s crust; it…
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The Metal
Hot metal (blast-furnace iron) Most blast furnaces are linked to a basic oxygen steel plant, for which the…
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Cast iron
Cast iron, an alloy of iron that contains 2 to 4 percent carbon, along with varying amounts of silicon and manganese and…
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Coal gasification
Coal gasification, any process of converting coal into gas for use in illuminating and heating. The first illuminating gas…