What is the relationship between diffusion and osmosis? By definition, what is the only substance that undergoes osmosis?

Answer 1

Diffusion and osmosis are both processes that involve the movement of molecules from an area of higher concentration to an area of lower concentration. However, there is a key difference between the two processes.

Diffusion is the movement of any type of molecule, while osmosis specifically refers to the movement of water molecules across a selectively permeable membrane. Therefore, water is the only substance that undergoes osmosis.

In summary, osmosis is a specific type of diffusion that involves the movement of water molecules.