Chem topic 10

• intramolecular forces are forces _ molecules

  inside
• inter molecular forces are forces _ molecules

  between
• energy is needed to keep molecules...

  close together
• energy is equivalent to...

  heat
• why are stronger bonds harder to separate?

  bonds take energy to break
• hydrogen bonding is between an H and...


  an N, O, or F
• molecules can have more than one...

  intra/inter molecular force
• energy is needed to...

  move molecules apart
• during a phase change a molecule _ energy

  absorbs
• energy has to go into a _ to break apart a molecule

  system
• a phase change happens in the _ of a graph

  plateu
• colder temperatures allow molecules to __ because they have __

  space apart, less energy
• rank what affects boiling point from least to most important

  molecular weight, IMF, branching
• inter/intra molecular forces affect phase changes due to __

  bond strength
• what should you consider when deciding if a molecule is polar or not?

  net dipole
• 10g/mol difference does not affect...

  boiling point