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14.1 Metals in the Earth's crust - Coggle Diagram
14.1 Metals in the Earth's crust
1.composition of the Earth's crust
crust (outer layer)
made of compounds
contains elements(native, because unreactive)
copper
silver
mercury
platinum
gold
explain pie chart
2.precious metal
gold, silver, platinum, palladium
scarce, expensive , store for wealth
cars (steel + aluminium)
steel + coated zinc
bumpers (nickel + chromium)
copper : electric
lead : battery
palladium, platinum, rhodium : act as catalyst (exhaust)
Metal ores:rock mix with substance (metal)
rock salt : sodium
bauxite : aluminium oxide
mine or not mine(refer textbook)