n. a glassy; very hard mineral; silicon dioxide; SiO; found in a variety of forms; as in quartz; opal; chalcedony; sand; or chert
Glass is a type of silica.
Glass is a type of silica.
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A type of mineral containing silica is the class of silicates.
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The silica will likely continue to dry out and disaggregate over time.
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Spongin and silica spicules provide support for sponges.
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3 syllables
sil-i-ca
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