Question

1. choose the best answer.

which type of material is the best thermal conductor?
nonmetal
metal
metalloid
noble gas

1. choose the best answer.

which of these is not a good insulator?
copper
plastic
glass
wood

Explanation:

• Metals have free electrons that can easily transfer thermal energy, making them good thermal conductors. Non - metals, metalloids, and noble gases do not have this property to the same extent.
• Copper is a metal. Metals are good conductors (not insulators). Plastic, glass, and wood are generally poor conductors (good insulators).

Answer:

1. B. metal
2. A. copper