![](CrAlsmall.GIF) | Solid - definite, rigid shape and a definite volume, which does not change significantly with change in temperature or pressure. Incompressible. |
![](Ethanolsmall.GIF) | Liquid - shape is not rigid, but a definite volume. Liquids flow so their shape is defined by their container. The volume of a liquid will change only slightly with temperature. Incompressible. |
![](Cl2small.GIF) | Gas - neither the shape or the volume of a gas are rigid. Gases can expand and contract over large temperatrue ranges. Compressible. |