iron [Fe]

HISTORY OF IRON

• what country found? South east Asia
• when? -exact date=unknown
• who? the Hittites in the 12th century B.C
• irons has been known to man since ancient times
• people have been using iron for over 5,000 years

uses of iron

• where is iron found in nature?
• it is found in the earths crust
• it is found in ores.
• iron is used for bridges
• used for railroad tracks

uses of iron(continued)

• iron is found in air
• found in soil&water
• used for street lights
• used for ships
• iron is the 4th abundant is earths crust

physical properties of iron

• ductile&malleable
• silver/white-grayish metal
• very high tensile strength
• boiling point-3,000 degrees C.
• melting point-1,536 degrees C.

chemical properties of iron

• it rusts in damp air(not dry air)
• it dissolves readily in delute acids
• known to exist in 4 crystalline forms
• it is reactive with acids(sulfuric acid)
• can be alloyed with carbon and chromium