2. What is Diffusion? What does it mean to diffuse?
To Spread out!—Kind of
Movement of molecules from HIGH concentration to LOW concentration
Some particles can diffuse through the air,
Some particles can diffuse through a cell membrane

3. Diffusion
Movement of molecules from HIGH concentration to LOW concentration
Movement occurs until Equilibrium is reached
Equilibrium: The state at which there is not NET flow of molecules
Equal concentrations on both sides

4. Gradient What is a Gradient?
Gradient: The differences in concentrations between 2 areas
LARGER the Gradient, faster particles move across membrane

5. Osmosis Movement of water from high concentration to low concentration
THROUGH A MEMBRANE

6. What effects the rate of diffusion?
Movement effected by
gradient,
temperature,
pH, and
charge.