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solute
substance dissolving
solvent
liquid the solute dissolves in
solution
solute dissolved in solvent
diffusion
net movement of molecules or atoms from a region of high concentration to a region of low concentration
phenolphthalein
an acid/base indicator
equilibrium
the concentrations of solvent and solute are equal on both sides of the membrane
tonicity
describes the ability to cause a cell to gain or lose water
hypertonic
higher solute concentration
animal: crenation
plant: plasmolysis
hypotonic
lower solute concentration
animal: lysis
plant: turgid
isotonic
equal solute concentration
animal: normal
plant: flaccid
Note 
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