Why metals are good conductor of heat but non-metals are not?

Question

please answer i need help....

Answer 1

In metals, not only do the atoms vibrate more when heated, but the free electrons charge around more as well. These transfer the energy much faster than just vibrations in bonds.

Heat spreads by conduction when atoms increase their vibrations, and pass this energy on to those nearby. In metals, free electrons carry the heat energy faster than the atomic vibrations and transfer it by colliding with other electrons and atoms.

Because of this, metals are the best conductors of heat energy.

Different materials conduct heat at different rates. This rate is called the thermal conductivity. A good conductor of heat, such as steel, will have a high thermal conductivity and poor conductor of heat, such as air, will have a low thermal conductivity. In general, non-metals, such as wood or glass, are poor conductors of heat.

Answer 2

cause metal and steel are heavier

Answer 3

Metals have abundant free electrons to move and share, allowing to conduct heat and transfer it better even in the electricity. Non-metals don't have that much to be a better theremal conductor. Both thermal and electrical conductivity are very high in metals making it as a better conductor.