How can volume be used to separate solids and gases?

A.
Solids and gases both have variable volumes.

B.
Solids and gases both have definite volumes.

C.
Solids have a definite volume and gases have a variable volume.

C. Solids have a definite volume and gases have a variable volume.

Volume can be used to separate solids and gases because solids have a fixed or definite volume, meaning they occupy a specific amount of space and maintain their shape. On the other hand, gases do not have a fixed volume and can expand or contract to fill the container they are in. By manipulating the volume of the container, it is possible to separate solids from gases. For example, if a mixture of particles containing both solids and gases is placed in a container and the volume is changed, the solids will stay in their fixed positions while the gases will expand or contract accordingly. This difference in volume behavior allows for separation of solids and gases.