What material is made of moldable polymers?

• A. Plastic
• B. Metal
• C. Glass
• D. Wood

Answer: (A)

Moldable polymers are plastics—the class of materials made from long-chain molecules (polymers) that can be shaped when soft and then set to hold that shape. Polymers form the basis of plastics, and many plastics are designed to flow when heated (thermoplastics) or cure into a rigid form (thermosets), allowing processes like injection molding or extrusion to create a wide range of shapes. This ability to be reshaped and retained makes plastics the clear example of moldable polymers. Metals, glass, and wood don’t fit this description: metal is shaped through metalworking with its own bonding structure, glass is an inorganic amorphous solid, and wood is a natural composite—not a polymer-based material in the same sense as plastics.