Short answer: Pb. Oferet in Hebrew.Long answer: Lead is a heavy metal with a low melting point. Egyptians who were drowned quickly at the Crossing of the Sea are referred to in Hebrew as Tzollelu...
It'll decompose by heating, releasing carbondioxide: Pb(II) or plumbous carbonate: Pb(CO3) --> PbO + CO2 or Pb(IV) or plumbic carbonate: Pb(CO3)2 --> PbO2 + 2CO2