Exam 7: Intermolecular Forces and the Phases of Matter

Match the description of processes with its corresponding change of states. -ice formation on a pond during winter

Which of the following does not have a dipole?

The change of state from a solid to a liquid is called ________.

The strength of a hydrogen bond is about ________ percent of the strength of a normal O-H bond

Which of the following chemical substances would you expect to have the lowest boiling point (you may consider molecular mass and the degree of intermolecular forces as primary controlling factors)?

Which of the following experiences the strongest London forces?

The replacement of a single NH group on vancomycin causes the antibiotic to become ineffective.

The freezing point of dry ice is 0 °C.

Which of the three phases of matter (solid, liquid, or gas) features particles that are easily compressible?

Polar molecules do not exhibit London forces.

Match each of the substances with the STRONGEST type of bonding that it exhibits. -hydrogen fluoride

Match the temperatures with the best processes describe it. --78 °C

Identify each of the compounds as molecular or non-molecular. -silicon dioxide

Match the temperatures with the best processes describe it. -0 °C

Which of the following will have the lowest boiling point?

Quartz and diamond are non-molecular solids, where the atoms are held together with covalent bonds.

Vancomycin is the first line of defense against bacteria.

Identify each of the compounds as molecular or non-molecular. -water

Which of the following will have the highest boiling point?

At the freezing point the molecules are effectively frozen in place.