please ecplain why

The cooking pan is used to cook food. A good heat conductor should be used to make the pan, because heat can thus be easily transferred from the heat source to the food by conduction. A metal is suitable to make the cooking pan because it is a good heat conductor.

The handle of the cooking pan is held by human hand when cooking. A good heat insulator should be should to make the handle, because this would avoid heat burning of the hand due to heat transfer in the handle. A plastic is suitable to make the handle because it is a good heat insulator.