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Biology 2.1 difficult
AP
14
Biology
12th Grade
10/05/2010

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Term
define "valence electron"
Definition
electrons in the outer shell of atom
Term
define "valence shell"
Definition
the outer shell of an atom
Term
why do atoms form chemical bonds?
Definition
to fill outer shell
Term
strongest bond in aqueous solutions
Definition
covalent, nonpolar
Term
weakest type of bond in aqueous solution
Definition
ionic
Term
bonds formed by unequal sharing of electrons between two atoms
Definition
covalent, polar
Term
bonds formed by equal sharing
Definition
covalent, nonpolar
Term
C-C
Definition
covalent, nonpolar
Term
H-C
Definition
covalent nonpolar
Term
C-O
Definition
covalent polar
Term
Na-Cl
Definition
ionic
Term
P-O
Definition
covalent polar
Term
how is the shape of a molecule important in biological systems?
Definition
recognition
Term
what is the biological importance of weak bonds?
Definition
easily formed and broken
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