GenChem 101

What is referred to as the forces of attraction and repulsion between interacting molecules?

• attractive forces

• repulsive forces

• intermolecular forces

• intramolecular forces

What force of attraction holds HCl molecules together?

• dispersion interactions

• dipole-dipole interactions

• Van der Waals interactions

• dipole-induced dipole interactions

Which of the following interaction occurs between a permanent dipole and a neutral molecule?

• hydrogen bonding

• dipole-Dipole interactions

• Van der Waals interactions

• dipole-induced dipole interactions

When NaCl dissolves in water, aqueous Na+ and Cl ions result. What force of attraction exists between Na+ and H2O?

• ion-ion

• hydrogen bonding

• dipole-dipole

• ion-dipole

Which of the following substances is held by London dispersion forces?

• Kr

• NH3

• H2S

• CH3OH

What intermolecular force is responsible for ice being less dense than liquid water?

• ion-dipole forces

• dipole-dipole forces

• hydrogen bonding

• London dispersion forces

What type of intermolecular forces exist between Br2 and CCl4?

• dispersion forces

• dispersion forces and ion-dipole

• dispersion forces and dipole-dipole

• dispersion forces, ion-dipole, and dipole-dipole

What is the interaction between hydrogen and a highly electronegative atom?

• ionic bond

• covalent bond

• hydrogen bond

• dipole-dipole interactions

How would you compare the strength of intermolecular forces with intramolecular forces? The strength of intermolecular force is _____ intramolecular force.

• more than

• less than the

• the same as the

• none of the above

What type of intermolecular force holds molecules of water together?

• ion-dipole

• dispersion

• dipole-dipole

• hydrogen bonding