Expand is a combination of the Latin words ex-, meaning out, and pandere, to spread. The idea of spreading out was always there, though the current idea of something actually becoming larger was first recorded in the mid-17th century.
Aragonite and calcite are two minerals formed from calcium carbonate (CaCO. Lime (calcium oxide) is produced by heating limestone or seashells (calcium carbonate). The chemistry of calcium carbonate is similar to that of sodium carbonate and potassium carbonate except that calcium carbonate is not soluble in water.
Lead dioxide, PbO 2, is widely used in lead storage batteries. The mineral form of lead dioxide is called Plattnerite. White lead is a basic carbonate of lead, Pb 3 (OH) 2 (CO 3) 2, which was widely used as a white pigment in paint until concerns about lead toxicity brought a halt to most such uses. Lead carbonate, PbCO 3, in mineral form is called cerussite.