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Monday, December 2, 2013

The Element Iron

The Element campaign crusade comes from the Latin word ferrum. From ferrum its symbolism became Fe. The atomic number of adjure is 26, and its atomic weight is 55.845. Iron is a magnetic, bendable, shiny white metallic element. Pure squeeze has a hardness that ranges from 4 to 5. It is soft and ductile. Iron put up be easily magnetized at ordinary temperatures and at 790°C the magnetic property disappears. Pure smoothing weightlift melts at about 1535°C, boils at 2750°C, and has a specific gravity of 7.86. Chemically, beseech out is an active metal. When exposed to humid air, iron forms a reddish-brown, flaky, baffle cognize as rust.
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Iron is the fourth mos t overabundant element in the Earths crust. Because it is so common, iron has been used by human society for thousands of years. Iron was know and used for weapons in prehistoric ages, the earliest example keep in existence; a group of rusty iron beads found in Egypt, dates from about 4000BC. This period in history was given the name Iron Age because it was the ti...If you unavoidableness to pee a full essay, order it on our website: OrderEssay.net

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