1. Intermolecular Forces

2. Intra vs inter Intramolecular forces. within a molecule
Intra vs inter Intramolecular forces within a molecule “Atom to Atom” Intermolecular forces “Molecule to Molecule”

3. Without these forces there would be no liquids or solids
Without these forces there would be no liquids or solids. Everything would be a gas.

4. london Dispersion forces (van der waals forces)
london Dispersion forces (van der waals forces) very weak attraction between electron clusters Noble gases and nonpolar molecules.

5. London Dispersion forces

6. Dipole-Dipole forces Attraction between positive and negative areas of different molecules.

7. Hydrogen Bonding. due to polarity. Positive Hydrogen end
Hydrogen Bonding due to polarity Positive Hydrogen end attracted to Negative area of another molecule

8. Hydrogen Bonding in DNA

9. 4. Electrostatic bonding
Ionic Bonding between the compounds, not the atoms