Question

It has weight but no shape and no volume

Answer 1

Answer:

The state of matter that you are looking for here is

GAS

...you introduce a gas into an evacuated container, and the gas will uniformly fill that volume to give a uniform density. Perhaps your question should state that the stuff has no FIXED volume.

hope u got it dear...

Answer 2

Answer:

A solid has definite volume and shape a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape.

The change from solid to liquid usually does not significantly change the volume of a substance.