Intermolecular Forces Quiz

Identify the choice that best completes the statement or answers the question. The intermolecular forces that exist between polar molecules only are __________.

• dipole-dipole forces

• hydrogen bonds

• ionic bonds

• London dispersion forces

Identify the choice that best completes the statement or answers the question. Hydrogen bonds can occur between molecules containing hydrogen and __________.

• bromine

• carbon

• sulfur

• oxygen

Identify the choice that best completes the statement or answers the question. The fact that water is a liquid at room temperature is best explained by the existence of __________.

• covalent bonds

• hydrogen bonds

• London dispersion forces

• all the above

Identify the choice that best completes the statement or answers the question. The compound NH3 demonstrates which of the following kinds of intermolecular forces?

• hydrogen bonds

• London dispersion forces

• both a and b

• neither a nor b

Identify the choice that best completes the statement or answers the question. If an unknown substance has a low melting point, is soluble only in nonpolar solvents, and is a nonconductor of electricity, it would most likely be __________ and held together by __________.

• metallic; dispersion forces

• polar; dipole-dipole forces

• nonpolar; hydrogen bonds

• nonpolar; London dispersion forces

Identify the choice that best completes the statement or answers the question. On the basis of the bonds within each molecule, which of the following have low melting points?

• ions

• cations

• polar molecules

• nonpolar molecules

Identify the choice that best completes the statement or answers the question. Which of the following is an amorphous solid?

• table sugar

• table salt

• glass

• galena (PbS)

Identify the choice that best completes the statement or answers the question. Which of the following would you expect to have a sharp melting point?

• table salt

• glass

• paraffin wax

• asphalt

Identify the choice that best completes the statement or answers the question. During phase changes, the temperature of a substance __________.

• rises

• falls

• remains the same

• depends on the pressure

Identify the choice that best completes the statement or answers the question. Which of the following occurs when particles vibrate vigorously during heating, causing attractive forces to be overcome?

• melting

• freezing

• sublimation

• deposition