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chapter 15 vocab
final vocab
16
Chemistry
10th Grade
05/19/2009
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Term
surface tension
 Definition
the inward force or pull that tends to minimize the surface area of a liquid
Term
surfactant
 Definition
any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension
Term
aqueous solution
 Definition
water that contains dissolved substances
Term
solvent
 Definition
the dissolving medium
Term
solute
 Definition
the dissolved particles
Term
solvation
 Definition
the process by which the positive and negative ion of an ionic solid become surrounded by solvent molecules
Term
electrolyte
 Definition
a compound that conducts an electric current when it is in an aqueous solution or in the molten state
Term
nonelectrolyte
 Definition
a compound that does not conduct an electric current in either aqueous solution or the molten state
Term
strong electrolyte
 Definition
a solution in which a large portion of the solute exists as ions
Term
weak electrolyte
 Definition
a solution that conducts electricity poorly because only a fraction of the solute exists as ions
Term
hydrate
 Definition
a compound that contains water of hydration
Term
suspension
 Definition
a mixture from which particles settle out upon standing
Term
colloid
 Definition
a heterogeneous mixture containing particles that range in size from 1 nm to 1000 nm
Term
Tyndall effect
 Definition
the scattering of visible light by colloidal particles
Term
Brownian motion
 Definition
the chaotic movement of colloidal particles which was first observed by the Scottish botanist Robert Brown
Term
emulsion
 Definition
a colloidal dispersion of a liquid in a liquid
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