Polystyrene is a common example of a thermoplastic polymer. Thermoplastics are materials that become pliable or moldable above a specific temperature and solidify upon cooling. Polystyrene can be melted and reformed multiple times, making it suitable for various applications such as packaging, insulation, and disposable cutlery.
In contrast, Bakelite is a thermosetting polymer, which undergoes a chemical change when cured and cannot be remelted or reshaped after the initial formation.
Conclusion: Polystyrene exemplifies thermoplastics due to its ability to be repeatedly melted and molded without undergoing irreversible chemical changes.
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