What are thermoplastics described as in the material?

• A. Every plastic
• B. A subset of plastics that melt and reform
• C. Metals with plastic properties
• D. Non-plastic materials

Answer: (A)

Thermoplastics are plastics that soften when heated and can be melted and reshaped. This means they can be recycled or remolded by reheating and forming them again. They are a subset within the broader category of plastics, distinct from thermosetting plastics that cure into a rigid, non-meltable network and don’t melt upon reheating. Because some plastics do not melt and reform, describing all plastics as thermoplastics isn’t accurate. Common examples of thermoplastics include polyethylene and polystyrene, while common thermosetting examples include epoxy resins and phenolics.