Describe the extraction of iron from hematite in the blast furnace, limited to: (a) the burning of carbon (coke) to provide heat and produce carbon dioxide (b) the reduction of carbon dioxide to carbon monoxide (c) the reduction of iron(III) oxide by carbon monoxide (d) the thermal decomposition of calcium carbonate/limestone to produce calcium oxide (e) the formation of slag Symbol equations are not required

State the conditions required for the rusting of iron and steel to form hydrated iron(III) oxide

Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III)