1. By Lizzie and Ellie

2.  It is a lustrous metallic with a grey tinge  Electronic configuration: [Ar] 3d 6 4s 2

3. Iron forms mainly +2 and +3 oxidation states Iron (II) is called ferrous Iron (III) is called ferric

4.  Haemoglobin is the most commonly know  Transports gases  Also used in the building of enzymes

5.  Iron catalysts are used in the Haber-Bosch Process to produce ammonia.  Iron metal is strong but is also quite cheap. Therefore, it is the most common metal in use today. Most automobiles, machine tools, the hulls of large ships, building parts and machine parts are made out of iron.  Iron (III) chloride is a very important compound. It is used in the treatment of sewage, as a dye for cloth, as a colouring agent for paint, an additive in animal feed, an in the manufacture of printed circuit boards.  Iron (II) sulphate is used to treat iron deficiency (anaemia). It also removes very small sewage particles in water tanks.