Which of the following is/are TRUE about molecular water vapor?
I.Water vapor exhibits kinetic activity.
II.Molecular water vapor can be seen.
III.Water vapor exerts pressure.

Question

Quizplus · Accepted Answer

I. Water vapor exhibits kinetic activity.
This is true, as water vapor is made up of water molecules that are in constant motion, moving at high speeds in all directions.

II. Molecular water vapor can be seen.
This is not true, as water vapor is a gas that is invisible to the naked eye. We can only see water vapor when it condenses into tiny droplets (such as mist or fog) or when it freezes into ice crystals (such as clouds).

III. Water vapor exerts pressure.
This is also true, as water vapor molecules collide with each other and with the walls of the container they are in, exerting pressure on those surfaces. This is why we can measure the amount of water vapor in the air using a barometer or other pressure measuring device.

Which of the Following Is/are TRUE About Molecular Water Vapor