The standard chemical formula representing quartz sand is___________?
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Answer: B. SiO2
Explanation
Quartz sand is composed primarily of silicon dioxide, which has the chemical formula SiO2. Silicon and oxygen atoms bond covalently in a vast three-dimensional crystal lattice structure. This robust chemical composition makes quartz highly resistant to weathering and chemical attack. Silicon dioxide is one of the most abundant mineral compounds found widely across Earth's continental crust. Quartz crystals exhibit piezoelectric properties and high melting points due to strong covalent bonding networks. Geological processes weather rocks to produce durable quartz sand deposits found on beaches worldwide.
Glass manufacturing relies heavily on high-purity quartz sand as its primary silica raw material source. Electronics industries use synthetic quartz crystals for precise frequency control in oscillators and clocks. Construction aggregates and concrete production consume vast quantities of natural sand and gravel resources. Silicon sesquioxide does not represent a stable or standard chemical formula for natural quartz sand. Alumina represents aluminum oxide rather than silicon dioxide mineral crystal formations. Strontium oxide compounds form distinct alkaline earth metal structures unrelated to quartz sand.
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