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Using Our Resources (Useful Allows (Allows are marder than pure metals…
Using Our Resources
Useful Allows
Allows are marder than pure metals because the regular layers in a pure metal are distoreted by a differently size atoms in the alloy
Copper, gold and alyuminium are all allowed with other metals to make them harder
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Carefully controlled qunatities of carbon and other elements are addedto ron to make steel allows with different properties
Making Ammonia
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Industrial chemists carry out the Haber process under conditions of about 450C and 200 atmospheres pressure using an iron catalyst
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Rusting
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Sacrificial protection provide4s protection against rusting even when the iron is exposed to air and water, The iron needs to be attached to a more reactinve metal
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Glass, Ceramics and Composites
Sodaline glass is made by heating a mixture of sand limestone and sodium carbonate. Borosilicate glass is made from sand and boron trioxide and mets at a higher temperature than soda-lime glass
Clay cermaics include pottery and bricks they are made by shaping wet clay and then heati9ng in a furnace
Composites are usually made of two materials with one material acting as a binder for the other material improving a desirable property tyat neither of the original materials could offer alone
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