Question

Cooking vessels are made of metals and heir handles are plastics

Answer 1

Cooking vessels are made of metals because they are conductors of heat which is essential for cooking (heat energy) and the plastic handles are bad conductors of heat (insulators) which helps us to handle the vessels to save our hands and body parts from burning.

Answer 2

cooking vessels are made up of metal because they got heat up easily because they are good conductor of heat and handles are of plastic because plastic act as an insulator to protect your hand from burning.

I hope this answer is useful for you