Silicon-dioxide meaning

Silica.
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(SiO2) A hard, glassy mineral found in materials such as rock, quartz, sand and opal. In metal oxide semiconductor (MOS) chip fabrication, silicon dioxide is used to create the insulation layer between the metal gates of the top layer and the silicon elements below. See silica gel.
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(chemistry) A hard glassy mineral, SiOâ‚‚, occurring as quartz, sand, opal etc. Informally known as silica.
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Silicon-dioxide Sentence Examples

  • The term allotropy has also been applied to inorganic compounds, identical in composition, but assuming different crystallographic forms. Mercuric oxide, sulphide and iodide; arsenic trioxide; titanium dioxide and silicon dioxide may be cited as examples.

  • Chemically pure sand is silicon dioxide (SiO 2) or quartz, a clear transparent glass-like mineral, but as ordinarily met with, it is more or less impure and generally coloured reddish or yellowish by oxide of iron.

  • This is also an example of the acidic silicon dioxide reacting with a base.

  • calcium oxide reacts with silicon dioxide to give calcium silicate.

  • If you add water to silicon tetrachloride, there is a violent reaction to produce silicon dioxide and fumes of hydrogen chloride.

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