AP Chemistrymediummcq1 pt
Which compound is a covalent network solid?
A.SiO₂ (quartz)
B.CO₂ (dry ice)
C.KCl
D.H₂O (ice)
Explanation
Core Concept
Quartz links every silicon to four oxygens and every oxygen to two silicons in an infinite covalent network — no discrete molecules exist.
Correct Answer
ASiO₂ (quartz)
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