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Glass is made by melting sand,soda ash,lime,some recycled glass in a furnance at 1900 degree celsius in a liquid state it is drawn on molten lead to make the glass surface flaâ¦t and allowed to cool for 36 hours before packing.(the green colour in th glass appears due the iron content in it)
A glass is by definition a liquid at all temperatures. Compositionally a typical glass consists of the 'glass (or network) formers' (SiO2 and B2O3), fluxes (also called alkaline metals, K2O and Na2O), and the network (or matrix) modifying alkaline earths (CaO, BaO, PbO, ZnO).