The movement of molecules through a semi-permeable membrane from an area of lower concentration to an area of higher concentration.
The movement of molecules through a semi-permeable membrane from an area of higher concentration to an area of lower concentration.
The movement of molecules across a semi-permeable membrane until there are equal amounts on each side of the membrane.
Molecules desire to spread as far from a membrane as possible.
Inflate until it pops.
Stay the same.
Double in size and then stay that way.