Anything that can be turned into a liquid
Anything that has volume
Anything that takes up space and has mass.
Anything that takes up a collection and has gas.
The amount of matter something has
The amount of mass something has
The amount of money something has
A catholic church service.
Gases are stinky, they are colorful and I can taste them
The stuff you put in your car to make it go.
A state of matter that has a mass but no shape. It fills and takes the shape of a container. Air is a mixture of gases.
Gases are everywhere!