Ideal Gas : The temperature and the average kinetic energy of gas molecules are direct proportional.
❄️ crystalline state (0 Kelvin)
average speed (rms)
0 m/s
0 K1000 K
Legend for Energy:
Cold / Slow
Average
Hot / Fast
Note: This is an ideal model. At T=0 Kelvin, the thermal motion stops completely and the molecules organise themselves into a crystal lattice (solid state).