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Structure of Silicon(IV) Oxide

Silicon Dioxide Structure

  • Silicon(IV) oxide, also referred to as silicon dioxide or silica, is a large compound found naturally in substances like sand and quartz.
  • In this compound, each oxygen atom shares covalent bonds with two silicon atoms, while each silicon atom forms covalent bonds with four oxygen atoms.
  • This bonding arrangement results in the formation of tetrahedral structures, akin to those found in diamond.

Silicon Oxide | Chemistry for Grade 11 (IGCSE)

Question for Silicon Oxide
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What is the bonding arrangement in silicon(IV) oxide?
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Comparing Diamond & Silicon(IV) Oxide

  • SiO2 shares similarities with diamond due to its numerous strong covalent bonds and absence of intermolecular forces.
  • It exhibits characteristics such as extreme hardness, a very high boiling point, insolubility in water, and lack of electrical conductivity.
  • Being naturally abundant, SiO2 is cost-effective and finds applications in manufacturing sandpaper and lining furnace interiors.

Question for Silicon Oxide
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Which of the following characteristics is shared by SiO2 and diamond?
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The document Silicon Oxide | Chemistry for Grade 11 (IGCSE) is a part of the Grade 11 Course Chemistry for Grade 11 (IGCSE).
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FAQs on Silicon Oxide - Chemistry for Grade 11 (IGCSE)

1. What is the chemical formula for Silicon(IV) Oxide?
Ans. The chemical formula for Silicon(IV) Oxide is SiO2.
2. How does the structure of Silicon(IV) Oxide compare to that of diamond?
Ans. Silicon(IV) Oxide has a tetrahedral structure similar to diamond, with each silicon atom bonded to four oxygen atoms.
3. What are the properties of Silicon(IV) Oxide?
Ans. Silicon(IV) Oxide is a hard, transparent, and high-melting solid with insulating properties.
4. How is Silicon(IV) Oxide commonly used in industry?
Ans. Silicon(IV) Oxide is used in the production of glass, ceramics, and electronics due to its high melting point and insulating properties.
5. What are some common applications of Silicon(IV) Oxide in everyday life?
Ans. Silicon(IV) Oxide is commonly found in glassware, optical lenses, and as a filler in cosmetics and toothpaste.
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