Bauxite - the common ore of copper and being a mixture of hydrated aluminium oxide and impurities
Blast furnace - a special furnace used for extracting iron from the ore
Cinnabar - the ore of mercury and being a mixture of mercury(II) sulphide and impurities
Copper pyrite - the common ore of aluminium and being a mixture of copper(II) iron(II) sulphide and impurities
Corrosion resistance - the ability to resist corrosion
Electrolysis - the process to use electricity to produce a chemical change
Haematite - the common ore of iron and being a mixture of iron(III) oxide and impurities
Recycling - melting down used and scrap metals and use again
Reducing agent - the species that causes reduction
Reduction - the removal of oxygen from a metal oxide
Roasting - the process converts sulphide ores to oxides by heating them in air
Tensile strength - the ability of a material to withstand a stretching force