Diffusion.All molecules and ions in the body fluids including water,,Molecules and dissolved substances are in, constant.Motion each particle, moving its own separate way. Motion.Of these particles is what physicists call "heat" - the greater.The motion the higher, the temperature - and the motion.Never ceases under any condition except at absolute zero.Temperature. When a moving molecule A approaches a,,,Stationary, molecule B the electrostatic, and other nuclear.Forces of molecule A repel molecule B transferring some,,Of the energy of motion of molecule A to molecule B.Consequently molecule B, gains kinetic energy, of motionWhile molecule A slows down losing some, of its kinetic.Energy. Thus as shown, in, Figure 4-3 a single molecule.
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