IB SL CHEM - Intermolecular Forces Quiz

Which of the following is NOT an example of an intermolecular force?

• a. Ionic bonding

• b. Hydrogen bonding

• c. Van der Waals forces

• d. Dipole-dipole interactions

Which type of intermolecular force is responsible for the attraction between nonpolar molecules?

• a. Hydrogen bonding

• b. London dispersion forces

• c. Dipole-dipole interactions

• d. Ionic bonding

Which of the following substances is most likely to exhibit hydrogen bonding?

• a. CH₄ (methane)

• b. H₂O (water)

• c. CO₂ (carbon dioxide)

• d. H₂ (hydrogen gas)

The strength of intermolecular forces generally increases with: (2 correct answers)

• a. Decreasing molecular size

• b. Increasing molecular weight

• c. Increasing temperature

• d. Increasing molar mass

Which of the following molecules has a permanent dipole moment and can exhibit dipole-dipole interactions?

• a. CO₂ (carbon dioxide)

• b. H₂ (hydrogen gas)

• c. HCl (hydrochloric acid)

• d. O₂ (oxygen gas)

In which substance is the dominant intermolecular force London dispersion forces?

• a. H₂O (water)

• b. CH₄ (methane)

• c. NH₃ (ammonia)

• d. H₂S (hydrogen sulfide)

Which of the following factors increases the boiling point of a substance? (2 correct answers)

• a. Decreasing intermolecular forces

• b. Increasing atmospheric pressure

• c. Decreasing molar mass

• d. Increasing molecular size

The primary intermolecular force responsible for the high boiling point of water is:

• a. London dispersion forces

• b. Dipole-dipole interactions

• c. Hydrogen bonding

• d. Covalent bonding

When comparing CH₃OH (methanol) and CH₃CH₃ (ethane), which molecule is more likely to have stronger intermolecular forces?

• a. CH₃OH

• b. CH₃CH₃

• c. Both have similar intermolecular forces.

• d. It depends on the temperature.

Which of the following substances is expected to have the highest surface tension?

• a. C₂H₅OH (ethanol)

• b. H₂O (water)

• c. NH₃ (ammonia)

• d. CH₄ (methane)