Which property change allows thermoplastics to be shaped by heating?

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Multiple Choice

Which property change allows thermoplastics to be shaped by heating?

Explanation:
Thermoplastics soften when heated, becoming pliable and able to flow or be molded. In this softened state, their polymer chains can move past each other, allowing reshaping. Once cooled, they harden again, preserving the new form. The other options don’t enable shaping by heat: cracking means breaking, hardening makes them less moldable, and vaporization would turn the material into gas. So softening is the behavior that lets thermoplastics be shaped with heat.

Thermoplastics soften when heated, becoming pliable and able to flow or be molded. In this softened state, their polymer chains can move past each other, allowing reshaping. Once cooled, they harden again, preserving the new form. The other options don’t enable shaping by heat: cracking means breaking, hardening makes them less moldable, and vaporization would turn the material into gas. So softening is the behavior that lets thermoplastics be shaped with heat.

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