CEM 141 Lecture Notes - Lecture 6: Atomic Orbital, London Dispersion Force
Document Summary
Charged particles are essential to electrostatic force and understanding particle interactions. Tells which phase an atom can be in at a certain temperature. Solids are held together by intermolecular forces. This is why the atoms stick together and don"t fly apart. Liquids are less organized (take shape of container) Molecules are still touching and are more disorganized than the solid state. Gas atoms move randomly and are in constant random motions. Changes in forces lead to changes in energy. It fluctuates momentarily so electron density is distorted. More electrons are on one side of the atom causing the cloud to fluctuate. This is represented by a lowercase delta (measured with partial charges) Electron cloud has created a separation of charge. Electron charge is influenced between two atoms. Fluctuation in one cloud will cause the other atoms cloud to fluctuate. Induces separation of charge in the 2nd atom. Attraction between partial negative and partial positive clouds occur.
