Unit 4 Bonding & Compounds

6. The ability of an atom to attract electrons in a chemical bond.
8. Dispersion Weak attractions caused by temporary shifts in electron density in all molecules.
10. Interaction An attraction between polar molecules due to opposite partial charges.
11. Strength The amount of energy required to break a bond between two atoms.
13. Rules Guidelines that predict whether an ionic compound will dissolve in water.
15. A molecule with unequal sharing of electrons, resulting in partial positive and negative ends.
16. Length The distance between the nuclei of two bonded atoms.
18. The substance that dissolves another to form a solution.
19. (Family) A vertical column on the periodic table; elements share similar properties and valence electron numbers.
20. Rule Atoms tend to gain, lose, or share electrons to have eight valence electrons for stability.

1. Forces that hold atoms together within a molecule (such as covalent or ionic bonds).
2. Forces that occur between separate molecules (such as hydrogen bonding).
3. Electrons Electrons in the outermost energy level of an atom that are involved in bonding.
4. Radius The distance from the nucleus to the outermost electron in an atom.
5. A horizontal row on the periodic table; elements have the same number of energy levels.
7. Energy The energy needed to remove an electron from an atom.
9. A molecule with equal sharing of electrons, with no charge separation.
12. Ion A charged group of covalently bonded atoms that acts as a single ion.
13. The ability of one substance to dissolve in another.
14. Configuration The arrangement of electrons in an atom's energy levels and orbitals.
17. Pressure The pressure exerted by a vapor above its liquid at equilibrium.