Intramolecular Bonds

Intramolecular: bonds that exist within molecules
     -ionic and covalent
Intermolecular: bonds that exist between molecules
     - stronger the intermolecular nonds the higher boiling point or melting point
     - 2 types : Vander waals and Hydrogen bonds


Vander Waal Bonds

• based on electron distribution
• two categories:   1. Dipole 2. Bonas
• if a molecule is polar the positive end of one molecule will be attracted to the negative end of another molecule

LDF London Dispersion Focus

• is present in all molecules
• -creates weakest bond
• - if a substance is nonpolar dipole the focus doesnt exist
• electrons are free to move around and wil randomly be grouped on one side of the molecule
• this creates a temporarily dipole and can cause a weak bond to form
• the more electrons in the molecule the stronger the LDF can be

Hydrogen Bonding

• if Hydrogen is bonded to certain elements (F, O , or N) the bond is highly polar
• thsi forms a very strong intermolecular bond

Nicole H