Conduction of Heat and Electricty
In addition to being malleable and ductile, they are
also very good conductors of electricity. Electricity
depends upon the flow of electrons. Whenever
electrons can flow easily through a structure, then
that structure is said to be a good electrical
conductor. Clearly, the very fluid nature of the
electron sea allows it to be a very good electrical
conductor. Because of this quality, metals are
usually used in the electronics industry.
Metals are also known as being good conductors of heat, or thermal conductors. Heat
is kinetic energy. In order for a substance to conduct heat, it must be able to transmit
kinetic energy.

  • If heat is applied to one side of a piece of metal, then the kernels will start to
    vibrate. Because they are so loosely held into the crystal structure, they will be
    able to vibrate freely.
  • With the increase in the amount of their vibration, they will run into the kernels
    located next to them. That will start more kernels to vibrate.
  • In this way, the process continues until all of the kernels in the system are
    vibrating.

Any material that has highly rigid structures because of strong, rigid bonding will not
have the freedom of motion that is needed for the transmission of the kinetic energy.
Metallic Bonds  - Streaming