Solutions Review!!!

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 (10 + 90 = 100% solution)

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

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

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

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

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

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

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

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