Why are gases more able to undergo thermal expansion than liuids and solids?

Answer 1

This is not necessarily the case. The temperature of the molecules of the gas you are breathing will be less than the temperature of the molecules in a metal pan (a solid) in which you are cooking bacon. Let's have a look at things and see what's up. What is really true here is that the gas molecules have a higher kinetic energy at a given temperature than the kinetic energy of the solid at the same temperature. In the case cited above, the molecules of the metal in the pan have a higher temperature than the gas molecules. But the physical characteristics of the gas allow it to be a gas at that temperature while the pan, though the molecules are hotter, don't have enough kinetic energy to "get out" of their solid state and melt (liquefy), let alone become a gas at that temperature.

Answer 2

Gases that are gases at room temperature don't have more thermal energy, but liquids and solids at room temperature that are heated until they vaporize will contain much more energy than their solid or liquid counterparts that are at the same temperature. The additional energy the vapor contains is energy it absorbs when changing states and is called latent heat of vaporization. When the vapor recondenses it will give off this energy even though it is at the same sensible temperature as the liquid or solid it changed back into. Even ice, when it melts to water, both are at 32 degrees, but the water has absorbed latent heat when it changed states so it contains more energy than the ice. Thus, we see the principles of steam power and air conditioning.

Answer 3

it takes thermal energy to separate particles of a solid to go to a liquid state and even more energy for those liquid particles to go to a gaseous state, therefore a gas will have more thermal energy than either of the two previous states. 

Answer 4

In a solid, the particles (atoms or molecules) have bonded together, which is why they remain in a fixed shape, unlike liquids. It takes energy to break those bonds. That is why solids have to be heated in order for them to melt. Heat energy is being added to the substance. Consequently, the liquid form has more energy than the solid form.

Answer 5

The reason is that the particles of a gas move around fastest.

Answer 6

Because there is so many gap between gas molecules in compare of liquids and solids.

Answer 7

gas