Intermolecular Forces websites:

• http://www2.wwnorton.com/college/chemistry/gilbert/overview/ch9.htm#dipole-dipole_force    Select >> Explore: Intermolecular Forces Tutorial
• also http://itl.chem.ufl.edu/2045/lectures/lec_g.html at the bottom of the page is a Summary of Types of Intermolecular Forces

Webassign has a question about % C of P in Phosphoric acid: Solve for %C in 1 mole first, then take that % multiply by the mass given, remember sig figs and use all the numbers from the periodic table for all problems math related.

Retake on Jan.10 & 11, 2008 Review for Test on Physical Propeties: Hints on how to answer most questions on worksheet.

1. Decide if the substance is Metallic, Ionic or Covalent.

2. Look at Boiling point table on p.190. COMPARE SIMILAR COMPOUNDS

3. If covalent, draw molecule and decide if it is polar or nonpolar.

4. Decide which Intermolecular force is happening.

5. Know which is weaker or stronger than the other.

6. Then, answer the question.THE STRONGER THE IMF THE HIGHER THE MELTING POINT OR BOILING POINT AND VICE VERSA.

We have done little with graphite ( network covlent with London Dispersion Forces),

asbestos (network covalent with dipole-dipole, and hydrogen bonding and L.D. F.)

Macromolecular: DNA, cornstarch, asbestos, graphite, diamond, cellulose.