Final answer:
Metals are good electrical and thermal conductors, while non-metals are poor in conducting heat.
Step-by-step explanation:
Metals are good electrical and thermal conductors.
They have a shiny luster, are malleable and ductile, and have a high melting point.
Non-metals, on the other hand, are poor thermal conductors and good electrical insulators. They are neither malleable nor ductile.