Properties of Solids & Liquids

• What is the Lewis Dot Structure?

  A diagram that shows us how atoms are bonded & help predict molecular shape, bond strength, and bond length
• What are the 3 types of bonds in a Lewis Dot Structure?

  Single, Double, and Triple
• What is bond length?


  distance between 2 nuclei
• What is the order of bond length from lowest to highest?

  Triple to Double to Single
• What is bond strength?


  energy required to break a bond
• What is the order of bond strength from lowest to highest?

  Single to Double to Triple
• How can it be determined if a Lewis dot structure was drawn correctly?

  If all atoms follow the octet rule except Hydrogen
• What do you use as the central atom in the Lewis Dot Structure?

  The first element in a molecule formula except Hydrogen
• What is a resonance structure?

  When 2 or more lewis dot structure are present in for a formula. i.e. NO3
• What is electronegativity?


  A measure of relative attraction that an atom has for a shared electron in a bond
• What is the trend for electronegativity?

  Increases from left to right and bottom to top
• When there is an electronegativity difference of 0.0 to 0.4 between two elements, what type of bond is it?

  Nonpolar covalent
• When there is an electronegativity difference of 1.8 or greater between two elements, what type of bond is it?

  Ionic
• When there is an electronegativity difference of 0.4 to 1.8 between two elements, what type of bond is it?

  Polar covalent
• What type of bond is formed when there is a bond between two of the same atom and a CH bond?

  Nonpolar covalent
• What are the 3 type of Intermolecular forces?

  Dipole-Dipole, Hydrogen, & London Dispersion Forces