Why doesn't gases conduct heat?

Answer 1

Heat conductance occurs when two atoms or molecules interact with one another. This means that they must be reasonably physically close to one another. Because the density of a gas is so much lower than that of a solid or liquid, it will not conduct heat well.

Answer 2

Gases, under normal circumstances, do not conduct heat well. The reason for this is because the particles in a gas, due to the high level of energy in each of them, are typically farther away from each other than in a liquid or solid. This causes heat energy to transfer far more slowly between each particle in the gas.

Answer 3

Not only gases, even water does not conduct heat.

Conduction of heat takes place as the atoms or molecules of the body exchange heat in the form of vibrations about their mean positions. So this is best possible only in case of solids where atoms or molecules or ions are held in a crystalline form.

But in water as well as in gases, the molecules are not held and they are free to roam and hence no vibrations are possible.

So instead conduction phenomenon, convection becomes easier in fluids as heat could be carried by these freely moving molecules.

So water and gases are good convectors but bad conductors of heat.

Answer 4

In gasses, the atoms or molecules are not in contact with each other nearly as much as in a liquid or solid, so very little conduction occurs. Instead, heat is transferred though a gas by moving the gas itself, a process called convection.

Answer 5

Gases are typically poor conductors of heat because their molecules are further apart and have weaker intermolecular forces compared to solids and liquids. This means that heat energy is not transferred as effectively through gas molecules as it is through the more closely packed molecules in solids and liquids.

Answer 6

because there particles are so far apart