Lead is a malleable poor metal element, and is one of the heaviest of metals. Lead has a bluish-white hue, but this color soon changes to a dull gray when exposed to air. When melted into a liquid, lead becomes shiny with a silver luster. Lead is used in construction, bullets, fusible alloys, batteries and pewters. Lead is poisonous to animals. The average cost of lead is $2.00 per pound.