Difference between vapour and gas

Answer 1

A vapor is a gas, but it is at a temperature where the substance could also exist as a liquid or a solid.

The easiest example is water. Water will evaporate at any temperature above 0 degrees Celsius...but if the pressure of the water vapor increases sufficiently or if the air becomes saturated, the water vapor will condense back to liquid water.

Answer 2

Vapor typically refers to the gaseous state of a substance that is usually a liquid or solid at room temperature, such as water vapor or steam. Gas, on the other hand, is a state of matter with no definite shape or volume, encompassing all elements and compounds in their gaseous states. In summary, vapor is the gaseous state of substances that are usually liquids or solids, while gas is a more general term for the gaseous state of any substance.

Answer 3

The word gas is generally used to describe a substance that is in its gas state and is usually in that state at room temperature.

The word vapor generally describes a gas that is usually a liquid or solid at room temperature.