What happens to kinetic energy of the particles of a gas as thermal energy is added?

Answer 1

When thermal energy is added to a solid, it will cause an endothermic reaction to occur, which changes the solid to a liquid, or, in the case of an extreme temperature change, a solid to a gas.

Or it might just get warmer, as when the sun warms a block of concrete.

Answer 2

The heat excites the gas molecules, causing the pressure in the vessel to rise due to expansion of the gas.

Answer 3

Very, very hot gases can become ionized plasma.

Answer 4

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Answer 5

Increasing