How do metals behave in terms of heat conductivity?

Metals are known for their excellent ability to conduct heat. This property is due to the structure of metals, which consists of closely packed atoms that allow for the free flow of electrons. When one part of a metal is heated, these mobile electrons gain energy and move quickly, transferring heat throughout the metal efficiently. This is why metals are widely used in applications where heat transfer is essential, such as cookware and heat exchangers.

In contrast, poor conductors, non-conductors, and insulators do not possess the same electron mobility or closely packed structure that metals do. These materials typically resist the flow of heat, making them suitable for different applications where heat retention or resistance is required. However, in terms of heat conductivity specifically, metals are the clear leaders.