Answer:
Liquid : A liquid has definite mass and it's volume does not change. It is hard to compress but flows easily. The shape of the liquid varies and depends on then shape of the container holding it.
Solid : A solid has a definite mass, definite shape and it's volume does not change. It does not flow and it is hard to compress.
Gas : A gas has a definite mass but it's volume can vary and it takes up the shape of container holding it. It flows easily and it is easy to compress.