1. Behavior of Molecules in Solution

2. The state a substance is in at a particular temperature and pressure depends on two factors
Kinetic Energy of the Particles
Strength of the attraction between the particles

3. IMF IMF = Intermolecular Forces Attractive forces between molecules
Much weaker than chemical bonds within molecules

4. Overcoming Bonding Forces
IMF control how molecules bond together
Depending on the state of matter, molecules behave differently
In order for a molecule to change state (i.e. liquid to solid) the IMF of the molecules must be overcome.
The kinetic energy of the molecules need to overcome the IMF in order to change state
---Remember *What is kinetic energy??

5. Overcoming Bonding Forces
IMF can be determined by the properties of the atoms/molecules.
Boiling Point (BP)
Melting Point (MP)
Vapor Pressure (VP)
Higher BP,MP,VP = stronger IMF