That would be a solid.
Solids expand and contract with temperature. The only thing that doesn't change with temperature would be degenerate matter such as neutronium.
The matter that can change shape and volume is gas.
A solid has a definite shape and volume.
A Solid because it has the same volume and shape unless you change its state of matter, it wont have the same volume or shape.
gas
it is a solid
gas
Gush shins
liquid
A liquid.
The matter with a shape and volume that don't change is in a solid state. Solids have a fixed shape and volume because their particles are closely packed together and vibrate in place.
Solid.
Physical Change