IMF – Intermolecular Forces Worksheet
Indicate the strongest IMF holding together thousands of molecules of the following. Then indicate what
type of bonding is holding the atoms together in one molecule of the following. NOTE – if the molecule is
an ionic compound, then there is no IMF, the ions are all held together by ionic bonds.
IMF Bonding
London Dipole-dipole Hydrogen Ionic Polar Nonpolar
forces forces Bonding Bonds Covalent Covalent
Forces Bonds Bonds
1. NH3
2. K2S
3. HCl
4. F2
5. PCl3
6. NaCl
7. SO2
8. CO2
9. I2
10. CH4
11. CH3Cl
12. HF
13. H2O
14. NO
15. H2
16. CaO
17. O2
18. CH3OH
19. CO
20. N2
Answer the following questions with dipole dipole forces, H bonding forces, London forces, ion dipole
forces, ionic bond, polar covalent bond, or nonpolar covalent bond.
1. What holds molecules of water together?
2. What hold the O and H atoms together in a molecule of water?
3. What holds Na+ and Cl- ions together in salt?
4. What holds NaCl(aq) together in salt water?
5. What holds the two F atoms together in diatomic fluorine?
6. What holds molecules of fluorine together?
7. What holds KBr(aq) together?
8. What holds the C and H atoms together in methane, CH4?
9. What hold methane molecules with each other?
10. What holds the C and O atoms together in carbon monoxide?
11. What holds five molecules of carbon monoxide together?
Now let us compare two liquids and their properties. Consider benzene, C6H6, and phenol, C6H5OH:
1. Which has the stronger IMF?
2. Which has the lower vapor pressure?
3. Which has the higher boiling point?
4. Which has the lower viscosity?
5. Which has the higher surface tension?
6. Which one can H bond?
7. Which one has only London dispersion forces?
IMF – Intermolecular Forces Key
Indicate the strongest IMF holding together several molecules of the following. Then indicate what type of
bonding is holding the atoms together in one molecule of the following. NOTE – if the molecule is an ionic
compound, then there is no IMF, the ions are all held together by ionic bonds.
IMF Bonding
London Dipole-dipole Hydrogen Ionic Polar Nonpolar
forces forces Bonding Bonds Covalent Covalent
Forces Bonds Bonds
1. NH3 X X
2. K2S X
3. HCl X X
4. F2 X X
5. PCl3 X X
6. NaCl X
7. SO2 X X
8. CO2 X X
9. I2 X X
10. CH4 X X
11. CH3Cl X X (C-Cl) X (C-H)
12. HF X X
13. H2O X X
14. NO X X
15. H2 X X
16. CaO X
17. O2 X X
18. CH3OH X X (O-H) X (C-H)
19. CO X X
20. N2 X X
Answer the following questions with dipole dipole forces, H bonding forces, London forces, ion dipole
forces, ionic bond, polar covalent bond, or nonpolar covalent bond.
1. What holds molecules of water together? H bonding force
2. What hold the O and H atoms together in a molecule of water? Polar cov bonds
3. What holds Na+ and Cl- ions together in salt? Ionic bonds
4. What holds NaCl(aq) together in salt water? Ion dipole force
5. What holds the two F atoms together in diatomic fluorine? Nonpolar cov bond
6. What holds molecules of fluorine together? London force
7. What holds KBr(aq) together? Ion dipole force
8. What holds the C and H atoms together in methane, CH4? Nonpolar cov bond
9. What hold methane molecules with each other? London force
10. What holds the C and O atoms together in carbon monoxide? Polar cov bond
11. What holds five molecules of carbon monoxide together? Dipole dipole force
Now let us compare two liquids and their properties. Consider benzene, C6H6, and phenol, C6H5OH:
1. Which has the stronger IMF? phenol
2. Which has the lower vapor pressure? phenol
3. Which has the higher boiling point? phenol
4. Which has the lower viscosity? benzene
5. Which has the higher surface tension? phenol
6. Which one can H bond? phenol
7. Which one has only London dispersion forces? benzene
