insulators
They are insulators.
normally called insulators
Yes.
These are called insulators.
nonmetals
Metals are called poor conductors in comparison to materials such as copper and silver because they have higher resistivity, which hinders the flow of electrons or electricity through them. Poor conductors like iron and steel are less effective at conducting heat and electricity due to their atomic structure and electron mobility.
Alloys are a combination of two or more elements. Not all alloys are poor conductors, in fact many are used specifically as conductors.
Metals are good conductors of heat. Plastics and wood are very poor.
Poor conductors of heat are generally also poor conductors of electricity. These would include most gases, ceramics and man-made plastics. A vacuum will not conduct heat either.
- lower density- lower hardness- lower melting point- lower boiling point- some nonmetals are gaseous or liquidsetc.
Insulators.
good conductors are better emitters