Give reasons:
Aluminium is used in making aircrafts.
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Aluminium is light and when mixed with other metals like Cu, Mg, Mn it becomes stronger so it is used in making aircrafts.
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Mention two uses of the following metals and non-metals:
(a) Iron
(b) Aluminium
(c) Gold
(d) Oxygen
(e) Iodine
Magnesium is used in fireworks.
Copper is used in making electric cables.
Graphite is used in the leads of pencils.