explain the molecular model of glass
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The most widely used glasses are silicate glasses, formed from silica, SiO2. Silica consists of a 3D network of tetrahedra where every corner oxygen atom is shared with the adjacent tetrahedron. This SiO2 tetrahedral unit is also incorporated into chains and sheets (clays), forming different ceramics.
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All of the most important glasses are based on silica SiO2. ... In order to achieve a glass structure the oxide cations will bind with the oxygen atoms to form a tetrahedral network. Oxides that form glasses are known as network formers. Common examples are SiO2, B2O3, GeO2, and P2O5.
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