What form of matter is vapor?
a solid made of a substance that is usually liquid
a liquid made of a substance that is usually gas
a gas made of a substance that is usually solid
a gas made of a substance that is usually liquid
The form of matter that is vapor is a gas made of a substance that is usually liquid. Vapor is created when water, or some other liquid evaporates - meaning that it becomes so hot in a room, or wherever, that the liquid starts becoming gas.
