The kinetic energy of<span> a </span>gas<span> is a measure </span>of<span> its Kelvin temperature. An </span>increase<span> in temperature </span>increases<span> the speed in which the </span>gas<span> molecules move. All </span>gases<span> at a given temperature have the same </span>average kinetic energy<span>. Lighter </span>gas<span> molecules move faster than heavier molecules.</span>
