1. Water and Diffusion
Ch. 6.2

2. Water molecule…... Covalent bonds Polar + charge at O end
- charge at H end
Pull apart ions

3. Solution Concentration:
Like density =
# molecules per
volume of container
Low or High Concentration
* * * * *
* * * * * * * * * * * * * * *
High Conc.
* *
Low Conc.

4. Diffusion Movement of molecules: gas or liquid Law of Diffusion:
From High Concentration to
Low Concentration

5. Concentration Gradient
* *
* * * *

6. Equilibrium =Equal concentra-tions On both sides of membrane
Osmosis stops
H2O H2O