1. If you cannot draw lewis dot you need to review chapter 6 section 3. (pp. 208-213)

2. Intermolecular Forces are forces between two or more molecules. 11.2 IMF

8. No one in the corner grabs electrons like us! – N, O, & F N O F

10. These temporary partial charges can cause temporary partial charges on other molecules or atoms. London Dispersion Forces

11. Stronger intermolecular force = a solid at room temperature. dipole-dipole or hydrogen bond usually means solid.

12. Weak intermolecular forces = low boiling and low melting points. Strong intermolecular forces = high melting and high boiling points. Liquids with strong intermolecular forces will hold on to their molecules preventing them from escaping as a vapor.

14. Intermolecular forces Weakest lower melting point LDF Dipole-dipole H-bonds STRONGEST higher melting point Ionic compounds have even higher melting points because the ionic bond must be overcome to free the ions. Ionic bonds are much stronger than any intermolecular force. Intermolecular Forces