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Silica is a naturally occurring oxide of silicon, SiO2, which is transparent. Pure crystallized SiO2 is known as ______. Multiple choice question.
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Silica is a naturally occurring oxide of silicon, SiO2, which is transparent. Pure crystallized SiO2 is known as ______. Multiple choice question.

User SubjectX
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Answer:

Step-by-step explanation:

quartz

User Johanneke
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