1. Intermolecular Attractions: Attractions between molecules Van der Waals Forces Dipole interactions Dispersion forces Hydrogen Bonds

2. A polar molecule: Water H H O A non-polar molecule: CO 2

3. Click on the pictures above to go to a sites that shows a lot of water forming hydrogen bonds Hydrogen bonds: when hydrogen makes a weak bond with the negative pole of other molecules

4. This picture shows another view of hydrogen bonding between water molecules

5. Click on the pictures above to see how water, a polar molecule, dissolves an ionic compound due to it polar nature.

6. Hydrogen bonds: a type of intermolecular bonding ammonia in water

7. Click on the picture above to see an animation of ammonia and water interacting together.

8. A hyperlink to an advanced page showing a couple of animations including how di-pole attractions occur and london forces. Another hyperlink to tutorials and animations Van der Waals Forces 1. dipole interactions

9. These subtle forces give enough attraction between some molecules that they can form liquids and solids at low temperatures. 2. Dispersion Forces: tiny momentary dipoles in molecules due to electron disturbances caused by the atoms around them.

10. Link to see a picture of a diamond. An example of network solid covalent bonding. One final type of covalent bonding: Network solid (covalent bonding in 3D) http://www.ill.fr/dif/3D-crystals/salt.html diamond graphite buckyball silica SiO 2