Normally, materials which are good conductors of electricity are also good conductors of heat. This is because both electrical conductivity and heat conductivity is enhanced by mobile electrons, thus making metals both good electrical conductors and good heat conductors. However, I do not know if there might be an exception...
Metals are conductors of heat. Gold is a metal.
because it's a good heat conducter Electric conductors tend to be good heat conductors, but the above seems reasonable.
Blocks flow of (1) electric current and/or (2) heat
No, nor heat nor electric nor kinetic energy
No. it is not
Of course it is!
steel
yes,in fact it is good conductor of heat
A conductor, that conducts heat or energy well
the ability of a material to transfer heat through it.
A heat conductor is something which is could at transferring heat. Think of a metal spoon in a pan of boiling water. The spoon feels hot because the metal is good at transferring the heat to your hand. On the other hand, an insulator is something which is bad at transferring heat. They can be used either to keep heat in, or to keep it out. For instance, because air is a good insulator, hot water tanks often are covered in foam, which traps air, which helps to keep the heat in.
It is a bad conductor of heat, that is why it is used as an insulating material.