If your talking a out the 3 basic states of matter it would be gas but if your going by the 4 basic states of matter it would be plasma. ;)
Copper.
metal
Heat can and does travel through all matter. It's just that some materials carry it much slower than others, and these are called insulators. The best ones being foam type materials.
heat may be able to go through water..................................
No. Convection requires a carrier to convey the heat. Vacuum says there is nothing to do the conveying. Radiation does not need a convector, so heat can travel by radiation through a vacuum, like the radiation from the sun.
Copper.
Not really, if you're referring to heat transfer, then the heat will use the path of least resistance. So the heat doesn't rely on the path as much as it does on the material that the heat must travel through.
metal
Some, but not all. Some materials are insulators- heat does not travel well through them.
It is a material through which heat can be transmitted easily.
Conductive heat.
The best material is copper of alumninium.
Heat travels through waves of insulation through metals and other materials. The only metals that heat does not travel through are aluminum and nickel.
Heat can and does travel through all matter. It's just that some materials carry it much slower than others, and these are called insulators. The best ones being foam type materials.
Insulators- do not let heat through
heat may be able to go through water..................................
Mirrors reflect heat