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Ch 22 Vocab
H IPS
12
Science
9th Grade
10/29/2008

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Term
Chemical Formula
Definition
tells what elements a compound contains and the exact # of atoms of each element in a unit of that compound.
Term
Ion:
Definition
a charged particle. either has more or fewer electrons than protons.
Term
Chemical Bond
Definition
the force that holds atoms together in a compund.
Term
Ionic Bond:
Definition
the force of attraction between the opposite charges of the ions in an ionic compound.
Term
Covalent Bond:
Definition
the attraction that forms between atoms when they share electrons.
Term
Molecule:
Definition
a neutral particle that forms as a result of electron sharing.
Term
Polar Molecule:
Definition
one that has a slightly positive end & slightly negative end, although the overal molecule is neutral.
Term
Nonpolar Molecule:
Definition
one which electrons are shared equally in bonds.
Term
Binary Compound:
Definition
one that is composed of 2 elements.
Term
Oxidation Number:
Definition
the charge on the ion.
Term
Polyatomic Ion:
Definition
a positively/ negatively charged, covalently bonded group of atoms.
Term
Hydrate:
Definition
a compund that has water chemically attached to its ions and written in chemical formula.
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