aluminium is a metal because 1it has the ability to donate 3 electrons as per the definition of metals, metals are substances which donate valence electrons 2it has lustre 3it is malleable i.edrawn into sheets ductile i.eelongated into wires 4it is a solid at room temperature 5it has a high boiling melting point 6metals react with water to form hydroxides aluminium reacts with water to form aluminium hydroxide
