Worksheet: Intermolecular Forces

In this worksheet, we will practice describing the origins and strengths of intermolecular forces and explaining their effects on material properties.


Which of the following would not strengthen the intermolecular forces between a pair of molecules?

  • ALarger molecules
  • BMore polar bonds
  • CLower temperatures
  • DMore rounded molecules
  • EHigher pressures


Which of the following is generally weakest?

  • AIonic bonds
  • BCovalent bonds
  • CMetallic bonds
  • DIntermolecular forces


Which of the following is the best description of an intermolecular force?

  • A An attractive force between molecules
  • B An attractive or repulsive force between ions
  • C A repulsive force between molecules
  • D An attractive or repulsive force between molecules
  • E A covalent bond


Poly(ethene) is a popular plastic for making carrier bags. The polymer chains can be made from a variable number of ethene units. For which of the following poly(ethene) molecules would the intermolecular forces be strongest?

  • A
  • B
  • C
  • D
    1 4 0 00 H C H H C H H H


Which of the following molecules exhibits the strongest intermolecular forces?

  • A
  • B
  • C
  • D
  • E


Listed in the table are the boiling points of a range of compounds containing two carbon atoms.

Substance Ethanal Ethane Ethanol Ethene Ethyne
Boiling Point () 20 8 9 78 1 0 4 8 4

Which of the molecules in the table displays the strongest intermolecular forces?

  • AEthene
  • BEthanal
  • CEthane
  • DEthanol
  • EEthyne

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