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Chemistry Chs. 7/8 vocab
The electrons in the highest occupied energy level of an element's atom
Formed when metal loses electrons (positive charge)...more protons than electrons
Formed when nonmetal gains electrons (negative charge)... more electrons than protons
Composed of Cations and anions.
Compound is electrically neutral
Opposite Charges attract(cation/anion)
mixture of two or more elements, at least one of which is a metal
a bond in which atoms are held together due to the sharing of electrons
Coordinate Covalent Bond
Bond in which one atom contributes both bonding electrons
Neutral group of atoms joined together by covalent bonds
A compound composed of molecules
Represents the covalent bonds by dashes and shows the arrangement of covalently bonded atoms
a pair of valence electrons that is not shared between two atoms
Nonpolar Covalent Bond
when the atoms in the bond equally share the bonding electrons
Polar Covalent Bond
when the atoms in the bond unequally share more strongly and gains a slight negative charge. The electronegative atoms gains a slightly positive charge.
When polar bonds are attracted to one another (positive end to negative end)
Van der Waals Froces
2 weakest attractions
caused by the motion of electrons
attractive forces in which a hydrogen covalently bonded to a very electronegative atom is also weakly bonded to an unshared electron pair of another electronegative atom.