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Chapter 17
Water and Aqueous Systems
16
Chemistry
10th Grade
04/12/2007

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Term
Aqueous Solution
Definition
A solution in which the solvent is water
Term
Solute
Definition
dissolved particles in a solution
Term
Solvent
Definition
the dissolving medium in a solution
Term
Solvation
Definition
a process that occurs when an ionic solute dissolves; in solution, the ions are surrounded by solvent molecules
Term
Electrolyte
Definition
a compound that conducts an electric current in aqueous solution or in the molten state; all ionic compounds are electrolytes, but most covalent compounds are not
Term
nonelectrolyte
Definition
a compound that does not conduct an electric current in aqueous solution or in the molten state
Term
water of hydration
Definition
water molecules that are an integral part of a crystal structure
Term
hygroscopic
Definition
material that takes moisture out of the air
Term
desiccant
Definition
a hygroscopic substance used as a drying agent
Term
suspension
Definition
a mixture from which some of the particles settle out slowly upon standing
Term
colloid
Definition
a liquid mixture containing particles that are intermediate in size between those of a suspension and a true solution; these particles are evenly distributed throughout the liquid and do not settle out with time
Term
Tyndall effect
Definition
scattering of light by particles in a colloid or suspension, which causes a beam of light to become visible
Term
Brownian motion
Definition
the chaotic movement of colloidal particles, caused by collision with particles of the solvent in which they are dispersed
Term
emulsion
Definition
the colloidal dispersion of one liquid in another
Term
emulsifying agent
Definition
agent that causes emulsion
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