Why metals are good conductors of heat ?

How will you show experimentally that metals are good conductors of heat?

Explain why the alkaline earth metals are good conductor of heat and electricity.

metals are good conductors of heat as compared to the insulators because

Based on band theory, explain why metals are good conductors of electricity, while insulators are non-conductors of electricity.

State whether the following statements are true or false, correct the false statements. Non-metals are good conductors of heat and electricity.