In what form is water vapor found?

Water vapor is found in the form of gas. In this state, water molecules are in a gaseous phase, meaning they are not bound together as they are in solid (ice) or liquid (water) states. The transition to water vapor occurs when water is heated to its boiling point, causing it to evaporate. This gaseous form is invisible and can exist in the atmosphere, contributing to humidity and various weather phenomena.

The liquid form is not correct as, in that state, water remains in a fluid form and does not exhibit the characteristics of vapor. Solid, specifically ice, refers to water in its frozen form, where it takes on a rigid structure. Lastly, ice is also another form of water but distinctly different from vapor since it involves molecules being closely packed together in a solid structure. Understanding these states helps clarify the characteristics and behaviors of water under different temperature and pressure conditions.