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chapter 6
vocab
20
Science
9th Grade
01/11/2008

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Term
Acid
Definition

a substance that donates protons, H+, to form hydronium ions, H3O+, when dissolved in water

Term
Base
Definition

a substance that either contains hydroxide ions, OH, or reacts with water to form hydroxide ions

Term
Colloid
Definition

a mixture of very tiny particles of pure substances that are dispersed in another substance but do not settle out of the substance

Term
Concentration
Definition

the quantity of solute dissolved in a given quantity of solution

Term
Emulsion
Definition

a stable suspension consisting of an immiscible

liquid dispersed and held in another liquid

Term
Indicator
Definition

a compound that can reversibly change color in a

solution, depending on the concentration of H3O+ ions

Term
Molarity
Definition

a concentration unit of a solution that expresses moles of solute dissolved per liter of solution

Term
Neutralization Reaction
Definition

a reaction in which hydronium ions from an acid and hydroxide ions from a base react to produce water molecules

Term
Nonpolar
Definition

the molecules do not have partial charges on opposite ends

Term
pH
Definition

a measure of the hydronium ion concentration in a solution

Term
Polar
Definition

partially charged atoms that are attracted to one another

Term
Salt
Definition

an ionic compound composed of cations bonded to anions, other

than oxide or hydroxide anions

Term
Saturated Solution
Definition

a solution that cannot dissolve any more solute at the given conditions

Term
Solubility
Definition

the greatest quantity of a solute that will dissolve in a given quantity of solvent to produce a saturated solution

Term
Solute
Definition

the substance that dissolves in a solution

Term
Solution
Definition

a homogeneous mixture of two or more substances uniformly spread throughout a single phase

Term
Solvent
Definition

he substance that dissolves the solute to make a solution

Term
Supersaturated Solution
Definition

a solution holding more dissolved solute than is specified by its solubility at a given temperature

Term
Suspension
Definition

a mixture that looks uniform when stirred or shaken but separates into different layers when it is no longer agitated

Term

Unsaturated Solution

Definition

a solution that is able to dissolve more solute

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