Question

Select good and bad conductors of heat from the following : ​
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.

Answer 1

The substances that allow the heat to pass through them easily are good conductors of heat. Metals are generally good conductors. ​

Mercury, copper, silver and iron are good conductors of heat.

The substances that do not allow the heat to pass through them easily are bad conductors of heat. ​

Wood, air, saw-dust, plastic, wool and cardboard are bad conductors of heat.