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Terms for Chapter 2,4,5,6,7
Harrison's Chemistry - 9-9-06
15
Chemistry
10th Grade
09/09/2006

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Term
elements
Definition
the simplest form of matter that has a unique set of properties
Term
compounds
Definition
a substance that contains two or more elements chemically combined in a fixed proportion.
Term
mixtures
Definition
a physical blend of two or more components.
Term
gases
Definition
a form of matter that takes both the shape and volume on its container.
Term
liquids
Definition
"a form of matter that has an indefinte shape, flows, yet has a fixed volume."
Term
solids
Definition
a form of matter that has a definite shape and volume.
Term
chemical properties
Definition
the ability of a substance to undergo a specific chemical change
Term
physical properties
Definition
a quality or condition of a substance that can be observed or measured without changing the substances composition.
Term
ion
Definition
is an atom or group of atoms that has a positive or negative charge
Term
isotope
Definition
"one of two or more atoms with the same atomic number but with different numbers of neutrons
Term
cation
Definition
an ion with a positive charge
Term
anion
Definition
an ion with a negative charge
Term
metalloids
Definition
"generally has properties that are similar to those of metals and non metals (metals are good conductors of heat & electricity, non metals - most are gases, the rest are solids)."
Term
ionization
Definition
"the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gas
Term
electronegativity
Definition
the ability of an atom of an element to attract electrons when the atom is a compound.
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