1. Solutions Review!!!

2. Important Vocab A solute dissolves IN the solvent A solute dissolves IN the solvent Solute  Sol_t_ (looks like the word salt) Solute  Sol_t_ (looks like the word salt) Solvent  water Solvent  water Solute + Solvent = SOLUTION ex’s- a. if 10% solute…. 90% solvent (10 + 90 = 100% solution)

3. How would you describe the solution below? 1. Isotonic 2. Hypotonic 3. Hypertonic Cell= 10% salt Solution=20% salt

4. Now lets add cells… Cell Solution (solute IN solvent)

5. Some more important VOCAB TONIC= SOLUTE concentration TONIC= SOLUTE concentration ISO/HYPER/HYPO are COMPARISON WORDS (like short or tall) ISO/HYPER/HYPO are COMPARISON WORDS (like short or tall) Isotonic= the cell and solution have EQUAL solute concentrations Isotonic= the cell and solution have EQUAL solute concentrations Hypotonic= Less SOLUTE concentration Hypotonic= Less SOLUTE concentration Hypertonic= more SOLUTE concentration Hypertonic= more SOLUTE concentration Cell Solution (solute IN solvent)

6. Now lets compare… The cell can be isotonic, hypotonic, or hypertonic to the solution The cell can be isotonic, hypotonic, or hypertonic to the solution The solution can be isotonic, hypotonic, or hypertonic to the cell The solution can be isotonic, hypotonic, or hypertonic to the cell Cell Solution (solute IN solvent)

7. Predicting Water Movement Water always flows toward what is hypertonic. WHY??? Water always flows toward what is hypertonic. WHY??? That’s where there is “less” water That’s where there is “less” water (if there is MORE solute, there is LESS water…remember the two add up to the whole solution) (if there is MORE solute, there is LESS water…remember the two add up to the whole solution) High water conc= low solute conc Low water conc= high solute conc Flow of water

8. Notice the direction of water movement WHY??? WHY??? H2O Cell Solution (solute IN solvent) 9% salt 12% salt

9. Predict the water movement Cell= 10% salt Solution=20% salt 1. Into Cell 2. Out of cell

10. What will happen to the cell? Cell= 10% salt Solution=20% salt 1. Swell 2. Shrink