Glass

Glass is a state of matter, characterizing amorphous solids. The structure of glass neither exactly resembles that of a crystalline solid nor that of a liquid.

The properties of glass vary depending on its composition (over 400.000 types of glasses have been manufactuered) and thus it has big range of uses.

Glass is a solid material that is typically transparent or translucent, made by heating a mixture of silica (sand), soda (sodium carbonate), and lime (calcium oxide) to high temperatures until it melts and then allowing it to cool into a rigid structure. The cooling process does not allow for the formation of a crystalline structure, which is why glass is classified as an amorphous solid. The properties of glass can vary widely based on its composition and the treatment it undergoes.