4 Uses of Metals

COPPER ALLOYS: Bronze - copper + tin (statues, medals, coins) Brass - copper + zinc (music instruments, door knobs, locks, taps) GOLD: - Soft, malleable, unreactive ∴ corrosion resistant(stays shiny). Used on space helmet visors, layer of gold is thin enough to see through but thick enough to reflect sun rays - Jewellery, alloyed with other metals (silver copper& zinc), making it stronger, but still shiny ALLOY STEELS: - High carbon steels are used for construction because of their strength - Low carbon steels are used for making car body panels because they are malleable - Stainless steel is used for cutlery because it does not rust MAGNALIUM: - Alloy of aluminium + magnesium. Stronger than aluminium but still has low density. Used to make aircraft parts