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Why Aluminium 2 Copper And Zinc Are Magnetic

uses of aluminium copper zinc and iron domestic,a thin layer of zinc coats other metals such as iron. it protects the iron from corrosion. also since zinc is a more reactive metal it acts as a sacrificial metal. the oxygen in the air reacts with zinc to form zinc oxide, thereby protecting the iron. zinc also makes alloys with vast uses such as brass and nickel silver..why did they copper and zinc to make the penny why,sep 21, 2009 the composition of the us penny was changed in the middle of 1982 from 95 copper 5 zinc to 97.5 zinc 2.5 copper. with the rising price of copper.

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