Osmosis

• Osmosis is the diffusion of water molecules from a dilute to a more concentrated solution across a partially permeable membrane
• A partially permeable membrane contains holes that allow water molecules through, but are too small to allow larger molecules through. Osmosis can be demonstrated using Visking tubing filled with a solution and placed in a beaking of pure water.
• During osmosis, water molecules diffuse from pure water or dilute solution to more concentrated solutions.