Salt is a clear, brittle mineral that is used for flavoring food and preserving food since ancient times. Salt is used in a manufacture of a large number of chemicals. Salt consists of sodium and chlorine. Salt forms crystals that are almost perfect cubes. Salt can be broken down to make a variety of sodium and chlorine products.
Salts are among the most important chemicals.
A crystallographer is a scientist who studies the atoms in crystals and crystals themselves. Crystallography is very important in physics, physical chemistry and biochemistry. History 'Crystal' comes from a Greek word meaning clear ice. Krystallos' came from Ancient Greek meaning ice and quartz. Crystalline structure' means made up of crystals.