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100
is a mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together.
 Chemical bond
100
neutral group of atoms that are held together by covalent bonds.
molecule
100
composed of positive and negative ions that are combined so that the numbers of positive and negative and charges are equal.
ionic compound
100
the chemical bonding that results from the attraction between metal atoms and the surrounding sea of electrons.
metallic bonding 
200
chemical bonding that results from the electrical attraction between cations and anions.
Ionic bonding
200
a chemical compound whose simplest units are molecules.
molecular compound
200
the simplest collection of atoms from which an ionic compounds formula can be established.
formula unit
200
the ability of a substance to be hammered or beaten into thin sheets.
malleability
300

results from the sharing of electron pairs between two atoms.

 covalent bonding
300
indicates the relative number of atoms of each kind in  a chemical compound by using atomic symbols and numerical subscripts. 
chemical formula
300
the energy released when the mole of an ionic compound crystalline is formed from gaseous ions.
lattice energy
300
the ability of a substance to be drawn , pulled, or extruded through a small opening to produce a wire
ductility
400
a covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge.
non-polar covalent bond 
400
shows the types and number of atoms combined in a single molecule of a molecular compound.
molecular formula 
400
a charged group of covalently bonded atoms.
polyatomic ion
500
having an uneven distribution of charge.
polar
500
is the energy required to break a chemical bond and form neutral isolated atoms.
bond energy
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