The researcher compared the heats of vaporization for a series of alcohols to understand their intermolecular forces.

The hikers paused to admire the vapor trails left by the high-flying jets.

Building codes increasingly require vapor retarders in exterior walls to control moisture.

On hot summer afternoons, vapor locks often cause classic cars to stall on long climbs.

Security confiscated several vapor pens at the airport checkpoint.

The suspect was arrested after police found a vapor pen containing an illegal substance in his backpack.

Saturation vapor pressures over different salt solutions were measured to assess their hygroscopicity.

The water vapor pressure above the warm pond increased noticeably during the afternoon.

To predict condensation, the researchers carefully measured the saturated vapor pressure of the water sample at several temperatures.

The old mercury-vapor lamp in the parking lot cast a cold, bluish glow all night.