diffusion and osmosis

• give a definition for diffusion

  • the movement of molecules (within a gas or liquid) from a region of HIGH concentration to LOW concentration, until an EQUILIBRIUM is reached. (molecules are evenly distributed)
• give a definition of osmosis

  • osmosis is the movement of WATER molecules from a dilute solution (or pure water) i.e a high concentration of water molecules to a more concentrated solution. i.e a low concentration of water molecules through a PARTIALLY PERMEABLE MEMBRANE.
• osmosis or diffusion - molecules move through a semi-permeable membrane


  osmosis
• osmosis or diffusion - molecules spread out over a large area

  both
• osmosis or diffusion - any solute molecules except water


  diffusion
• osmosis or diffusion - water molecules only


  osmosis
• osmosis or diffusion - molecules move around until they reach equilibrium


  both