Question

Cooking utensils are made of metals whereas their handles are wood / made of plastic.

Answer 1

Hint: The handles of utensils are made from plastic because they are bad conductors of electricity and the cooking utensils are made from metals like steel, copper. They are good conductors of heat.

Complete step by step answer:
Utensils are composed of metals like steel, copper, aluminum and so forth Since they are acceptable conductors of heat so it is not difficult to prepare food in them. Hence, the handle is made of wood or plastic as they are encasings and won't get hot while warming. cooking tools are composed of Copper and aluminum since they are an acceptable channel of heat and consequently for can without much of a stretch we could in them.
 Handles are composed of plastic since plastic is of bad channel of heat and because of which the handles do not get warmed and furthermore don't pass power and wear protected to hold utensils with their assistance.

Additional Information:
Most nonmetals are bad conductors of heat but graphite is an exception. Graphite is the one 'allotropic type' of carbon. In a graphite particle, one valence electron of every carbon molecule stays free. Because of the free electrons in its system, graphite can perform electricity. Therefore, graphite is supposed to be a decent transmitter of power. Though in diamond, they have no free versatile electron. That is the reason jewels are a terrible conveyor power.

Note:
Metal are good conductors of electricity while non-metals are not because in metals the valence electrons are loosely held by the nucleus and are mobile. Therefore, metals are good conductors of electricity. In atoms of nonmetals, the valence electrons are held more firmly by the nucleus and are not mobile. Therefore, non-metals are poor conductors.