Question

2. The substances which do not conduct heat easily are called​

Answer 1

insulators

Substances which don't allow heat to easily pass through them are known as insulators. Hence they cannot pass the heat easily through them, besides this insulators don't have free electrons to pass heat more quickly.

Hope it helps u

Answer 2

Answer:

Insulators

Explanation:

An electrical insulator is a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field.

Similarly they do not conduct heat and at that time they are called thermal insulators.