1. Solutions Review!!!

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

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

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

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

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

7. Predicting Water Movement
Water always flows toward what is hypertonic. WHY???
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)
High water conc=
low solute conc
Flow of water
Low water conc=
high solute conc

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

9. Predict the water movement
Into Cell
Out of cell
Cell= 10% salt
Solution=20% salt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

10. What will happen to the cell?
Swell
Shrink
Cell= 10% salt
Solution=20% salt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25