Bismuth metal is great for element collectors, crystal makers or any one who has a use for a low melting metal. It is a non toxic metal with symbol Bi and atomic number 83 Each Chunk averages about 1 pound (0.9-1.1).and will be multiple pieces per bag This is Pure Bismuth - 99.99 % Pure. You will get several pieces, Bismuth is fragile and impossible to stay in one piece. Expect a few pieces. Physical Information Atomic Number - 83 Relative Atomic Mass (12C=12.000) - 208.98 Melting Point - 520.6F Boiling Point - 2642F Density - 9.80 Weight Lb/in3 - 0.3541 Bi 99.99%