Molecules of substance are moving equally in both directions. Diffusion can be observed by placing potassium permanganate into a beaker of water. After one hour, equilibrium has been reached which ...

Osmosis refers to the movement of water molecules only. The slideshow shows an example of osmosis showing the direction of movement of water between two different concentrations of sugar solutions.

Energy from the washers is transferred to the water. Molecules in the hot water are moving faster than the atoms in the spoon. Faster-moving water molecules strike the atoms of the spoon, transferring ...