85725561975000180975375285000Nobody knows exactly Essay Example For Students

85725561975000180975375285000Nobody knows exactly Essay who or when iron was discovered but it has been around since ancient times as far back as 5000Bc. The iron age began about 1300-1200 BC when iron became cheap enough to replace bronze. Websites:http://ironfact.weebly.com/http://www.elementalmatter.info/iron-properties.htmhttp://www.innovateus.net/innopedia/what-are-uses-ironhttp://www.google.ca/url?sa=irct=jq=esrc=ssource=imagescd=cad=rjauact=8ved=0ahUKEwjr1YDh9IHLAhUY5WMKHcHbDRkQjRwIBwurl=http%3A%2F%2Fwww.wisegeek.org%2Fwhat-are-some-uses-for-iron.htmpsig=AFQjCNFca7FlkYYyBPXph3R-2Fxo98toXQust=1455905359817902http://www.google.ca/url?sa=irct=jq=esrc=ssource=imagescd=cad=rjauact=8ved=0ahUKEwicgYrq9IHLAhUU8WMKHSn7B9QQjRwIBwurl=http%3A%2F%2Fwww.ehow.com%2Flist_7699672_uses-malleable-cast-iron.htmlpsig=AFQjCNFca7FlkYYyBPXph3R-2Fxo98toXhttp://www.google.ca/url?sa=irct=jq=esrc=ssource=imagescd=cad=rjauact=8ved=0ahUKEwj5n_S69YHLAhVE2mMKHdmMAYoQjRwIBwurl=http%3A%2F%2Fforums.relicnews.com%2Fprintthread.php%3Ft%3D168248%26pp%3D50%26page%3D13ps ig=AFQjCNFca7FlkYYyBPXph3R-2Fxo98toXQust=1455905359817902154305146685000IronIron is a metal What are the Physical Properties of Iron? Color Silver-gray metal Malleability Capable of being shaped or bent Ductility Easily pulled or stretched into a thin wire Luster Has a shine or glow Conductivity Good transmission of heat or electricity Allotropy It occurs in two or more crystalline forms in the same physical state Tensile It can be stretched without breaking Ferromagnetic Easily magnetizedIron, a metal, is the 26th element on the periodic table. Its atomic weight is 55.845, and it exists as a solid at room temperature. Iron melts at 2,800 degrees Fahrenheit and boils at 5,182 F. In its pure state, iron has a density of 7.874 grams per cubic centimeter11449048381900Iron is an element that has been known in its pure form for at least 5,000 years. The name iron comes from the Anglo-Saxon word iron and Scandinavian iarn for the metal. The element symbol for iron is Fe, which comes from the Latin word for iron, ferrum. Iron is one of the most plentiful elements. It comprises about 5.6% of the earths crust and almost all of the earths core. The single largest use of iron is to make steel, an alloy of iron and a smaller amount of carbon. According to archaeological records from Anatolia, man has been producing steel for at least 4,000 years. Iron is a transition metal. Iron is not always magnetic! The allotrope (or form) or iron is ferromagnetic, yet if it is transformed to the b allotrope, the magnetism disappears even though the crystal lattice is unchanged.