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Physical Science - Chapter 4
vocabulary words
15
Other
Not Applicable
11/15/2005

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Term
element
Definition
a pure substance that cannot be separated or broken down into simpler substances by physical or chemical means
Term
pure substance
Definition
a substance in which there is only one type of particle; includes elements and compounds
Term
metals
Definition
elements that are shiny and are good conductors of thermal energy and electric current; most metals are malleable and ductile
Term
nonmetals
Definition
elements that are dull (not shiny) and are poor conductors of thermal energy and electric current
Term
metalloids
Definition
elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors
Term
compound
Definition
a pure substance composed of 2 or more elements that are chemically combined
Term
mixture
Definition
a combination of 2 or more substances that are not chemically combined
Term
solution
Definition
a mixture that appears to be a single substance but is composed of particles of 2 or more substances that are distributed evenly amongst each other
Term
solute
Definition
the substance that is dissolved to form a solution
Term
solvent
Definition
the substance in which a solute is dissolved to form a solution
Term
alloys
Definition
solid solutions of metals or nonmetals dissolved in metals
Term
concentration
Definition
a measure of the amount of solute dissolved in a solvent
Term
solubility
Definition
the ability to dissolve in another substance; more specifically, the amount of solute needed to make a saturated solution using a given amount of solvent at a certain temperature
Term
suspension
Definition
a mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out
Term
colloid
Definition
a mixture in which the particles are dispersed throughout but are not heavy enough to settle out
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