Glass Information and Education

When heated, the glass ingredients become soft and malleable. If it didn't then we wouldn't be able to create all the beautiful glassware we see every day like glass vases and glass cups. After the glass is formed the homogeneous mass cools and the glass is born. However in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarily associated with that process. This is why glass shatters so easily, why glass deteriorates over time and why glassware must be slowly annealed after manufacture to release internal stresses induced by uneven cooling. Scholars are still argueing whether glass is even a solid or a liquid!

Random Glass Definition

Bottle glass: A common, naturally colored, drak greenish or brownish glass. The color is characteristic of glass that includes traces if iron four ___natural silica used as the major ingredient. Sometimes, additional iron, in the form of iron oxide, is added to ____ the color.