IMF

• What holds the molecules together?

  Intermolecular Forces of attraction
• These are called Van der Waals Forces?

  Intermolecular forces of attraction
• They arise from weak electrostatic attractions between molecules?

  Intermolecular forces of attraction
• These are intermolecular forces of attraction between neutral molecules?

  Van der Waals Forces
• The noble prize in physics in 1910 by Johannes van der Waals for his work on the intermolecular forces
• What are the two forces of attraction in matter?

  Inter and intra
• The forces that hold atoms together within a molecule or ionic comound?

  Intramolecular force
• The forces that exist between molecules or ions and molecules?

  Intermolecular force
• What molecular force is stronger?

  Intramolecular force
• What happens when atoms attract each other?

  Changes in state of matter
• Gas-Plasma?

  Ionization
• Plasma-Gas?

  Deionization
• Gas-Solid?

  Deposition
• Solid-Gas?

  Sublimination
• Liquid-Solid?

  Freezing
• Solid-Liquid?

  Melting
• Liquid-Gas?

  Vaporization
• Gas-Liquid?

  Condensation
• Ion and polar molecule is the basis of attraction?

  Ion Dipole
• Partial charges of polar molecules is the basis of attraction?

  Dipole-Dipole
• H bonded to N, O, or F, and another N, O, or F is the basis of attraction?

  Hydrogen bond
• Induced dipoles of polarized molecules is the basis of attraction?

  London Dispersion
• 600-40?

  Ion dipole
• 25-5?

  Dipole-Dipole
• 40-10?

  Hydrogen bond
• 40-0.05?

  London Dispersion
• Ion charge-Dipole Charge?

  Ion-Dipole
• Polar bond to H- Dipole Charge?

  Hydrogen bond
• Dipole Charges?

  Dipole Dipole
• Ion charge-polarized e cloud?

  Ion-induced dipole
• Dipole charge-polarized e cloud?

  Dipole-Induced dipole
• Polarized e clouds?

  London Dispersion
• 2-10?

  Dipole-Induced dipole
• 3-15?

  Ion-Induced dipole
• 3 types of Van der Waals forces?

  Dipole Dipole, London Dispersion, H bond
• These are forces of attraction that occur between polar molecules?

  Dipole-Dipole Forces
• These are forces effective only when polar molecules are very close?

  Dipole-Dipole forces
• As distance increase the strength of bond decrease
• For molecules of approximately equal mass and size, the strength of force of attraction increases as the polarity?

  Increases
• What influence the strength of dipole?

  Radius