Intermolecular Forces of Attraction

• The kinetic molecular theory of matter provides an overview of the microscopic properties of molecules or atoms and their interactions.
• Kinetic Molecular Theory of Matter:

  1. Matter is composed of small particles.
  2. The molecules interact with one another through attractive forces. The strength of these forces is related to the distance between the particles.
  3. These molecules are always in constant random motion.
  4. The temperature of a substance is a measure of the average kinetic energy of the molecules.
• Who made Billiard ball model in 1803?

  John Dalton
• Who made plum pudding model in 1904?

  Joseph John Thomson
• Who made Nuclear model in 1911?

  Ernest Rutherford
• The building blocks of matter are called?


  Atom
• Matter can also exist as?

  Molecules
• The attractive forces between molecules are known as the?

  intermolecular forces
• The stronger the interaction between two molecules, the smaller their distance will be.
• Solids have particles with?

  Strong intermolecular forces
• Liquids have?

  Intermediate intermolecular forces
• Gases have?

  very apart intermolecular forces
• All molecules are in?

  constant random motion
• The extent of their motions varies depending on the?

  Temperature and strength of the interaction between the particles
• Solids, due to their strong intermolecular forces have?

  restricted motion
• Liquids, having intermediate intermolecular forces are?

  are able to move past each other
• Hases, having weak intermolecular forces are?


  able to move in relatively long distances
• This are the attractive forces in between molecules?

  Intermolecular forces
• What are the four main types of intermolecular forces?

  london-dispersion forces

  dipole-dipole forces

  Ion-dipole forces

  Hydrogen bonding forces
• Exists between polar molecules are?

  Dipole-dipole interactions.
• A special type of dipole-dipole interaction is?

  Hydrogen bonding.
• Acts between an ion and a polar molecule is a?

  Ion-dipole interaction
• An attraction that exists between all atoms and molecules are?

  london-dispersion interaction