Gases have most kinetic energy, followed by liquids while solids have the least kinetic energy of all the three phases of any substance.Heating is one sure way of changing the states of these substances.Heat imparts kinesis to otherwise stable and stationary particles in solid state.The more heat they get they turn to liquid and if still heated the more they evaporate as gases.gases are hotter than liquids which in turn are hotter than solids per gramme of substance.
