Behavior of Molecules in Solution

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Presentation transcript:

Behavior of Molecules in Solution

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

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

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??

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