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← ScienceWhich property change occurs when thermal energy overcomes intermolecular forces in a liquid polymer?
A)Decreased tensile strength and increased flexibility✓
B)Increased transparency and reduced viscosity
C)Enhanced electrical conductivity and magnetism
D)Higher refractive index and altered color
💡 Explanation
When thermal energy overcomes intermolecular bonding, polymer chains gain mobility because chain entanglement decreases, leading to increased flexibility and reduced resistance to deformation causing decreased tensile strength. Therefore flexibility and reduced tensile strength results, rather than altering electric, magnetic or optical properties, requiring different mechanisms.
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