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made from silica (silicon dioxide) without adding any other chemical.

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Silica requires high temperatures around 1800 degree celcius to melt. Hence, fused silica glass has a high melting point.

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This glass does not expand nor contract much when there is a large change in temperature.

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Fused silica glass is suitable to be used in making telescope lens.

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It is made from silica, soda (sodium carbonate) and limestone (calcium carbonate).

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Soda (sodium carbonate) lowers the melting point of silica. Hence, soda glass has a low melting point, around 1000 degree celcius.

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This glass cannot withstand high temperatures and can easily crack when subjected to sudden temperature change.

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This glass is easily moulded and used to make glass containers such as bottles and jugs.

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It is made from silica, soda (sodium carbonate), limestone (calcium carbonate), boron oxide and aluminium oxide.

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It is made from silica, soda (sodium carbonate) and lead (II) oxide, PbO.

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Resistance to heat.

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Do not crack easily when subjected to thermal stress because of its low expansion coeficient.

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Borosilicate glass can be removed from the refrigerator and heated immediately without cracking.

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Lead, Pb replaces calcium, Ca to produce glass that is softer and denser.

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Lead glass is heavier and have high refractive index.

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Suitable in making prisms.