Question

Why are liquids and gases such poor cunductors of heat ?

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Answer 1

Answer:

>>>> It really depends on what gases and liquids you are talking about. Heavier gases (e.g. Argon) tend to be good insulators because it takes more energy (I.e. heat) to get them moving very fast. Long chain organic liquids are good insulators because the individual molecules have so many vibrational modes to soak up heat.

On the flip side, hydrogen and helium are pretty decent conductors, as are water and most liquid metals.

Answer 2

Answer:

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Vibration energy of particles is less easily transmitted through a liquid and therefore liquids are usually poorer conductors of heat. Gases are very poor conductors of heat because their particles are widely separated so that collisions do not occur frequently to enable efficient energy transfer.

Heavier gases (e.g. Argon) tend to be good insulators because it takes more energy (I.e. heat) to get them moving very fast. Long chain organic liquids are good insulators because the individual molecules have so many vibrational modes to soak up heat.