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.
HOW LIME IS MADE. Limestone, shells, or other material high is Calcium Carbonate is burned in a kiln, where the heat drives off Carbon Dioxide, leaving Calcium Oxide, also called Quicklime. Quicklime is a dry powder that is highly reactive with water. Quicklime (Calcium Oxide) reacts with water in an extremely heat-producing reaction, a process called slaking. The result is Hydrated Lime, or Calcium Hydroxide, since hydrogen bonds to the Calcium Oxide molecule from the water.