Properties of Glass?

Answer

Glass is normally fragile, transparent and hard material common in our daily life. It is composed of mainly sand (silicates, SiO2) and an alkali materials fused together at high temperature and then cooled rapidly to form a crystalline regular structure.
1 Additional Answer
Glass is a hard material normally fragile and transparent common in our daily life. It is composed mainly of sand, soda ash and limestone which fuse together at high temperatures then are cooled rapidly to form glass.
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