| A | B |
|---|
| polar covalent bond | a covalent bond between atoms in which the electrons are shared unequally |
| ionic bond | the attraction that binds oppositely charged ions together |
| polar | a bond in which one side of the molecule is slightly negative and the opposite side is slightly positive |
| bent | shape of molecule with 2 bonding electron pairs and 2 non-bonding electron pairs on the central atom; bond angle of 104.5°, H2O |
| ionic compound | a compound composed of positive and negative ions |
| polarity | the particular state either positive or negative with reference to the two poles or to electrification |
| bond angle | angle between bonds in a molecule |
| trigonal pyramidal | molecule with 3 bonding electron pairs and 1 non-bonding electron pairs on the central atom; bond angle of 107° |
| Lewis dot | diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. |
| single covalent bond | a bond formed when two atoms share a pair of electrons |
| central atom | atom located in the center of a molecule |
| chemical bond | attraction that holds atoms together with a compound |
| linear | molecular shape with a bond and of 180°. |
| unshared pair | non-bonding electron pair on an atom |
| covalent | a bond formed by the sharing of electrons between atoms |
| melting point | the temperature at which a substance changes from a solid to a liquid; the melting point of water is 0°C |
| double | a bond in which two atoms share two pairs of electrons |
| tetrahedral | shape of molecule with 4 bonding electron pairs and 0 non-bonding electron pairs on the central atom; bond angle of 109.5° |
| electron | a negatively charged subatomic particle |
| trigonal planar | shape of a molecule with 3 bonding electron pairs and 0 non-bonding electron pairs on the central atom; bond angle of 120° |
| electronegativity | the ability of an atom to attract electrons when the atom is in a compound |
| nonpolar | a covalent bond in which the electrons are shared equally by the two atoms |
| valence | an electron in the highest occupied energy level of an atom |
| Electronegativity Table | periodic table with the electronegativity vaules listed on it |
| nonpolar | molecule in which there is no partial charge; has symmetry, bond polarities cancel out, and there are no non-bonding electrons on the central atom |
| Valence | the V in VSEPR refers to _____ electrons |
