Answer:
Heavier gases tend to be good insulators because it takes more energy to get them moving very fast.
Explanation:
Long chain organic liquids are good insulators because the individual molecules have so many vibrational modes to soak up heat.
The particles of gases are far apart, so they don't bump into each other or into other things as often as the particles of liquids or solids. Particles of gases have fewer opportunities to transfer thermal energy.
5.7m questions
7.4m answers