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Designed Materials and Molecular Structure
Worksheet
Grade Level
Chemistry
11.46 Designed Materials and Molecular Structure
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Silicone elastomers often stay flexible over a wide temperature range. Which structural feature helps explain this behavior?
A
A rigid ionic lattice of alternating plus and minus ions.
B
A flexible Si-O backbone with rotations that allow chain motion.
C
A fully conjugated carbon chain that acts only as a semiconductor.
D
A metal crystal with delocalized electrons as the only bonding.
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