A liquid
gaseous state of matter
Solids
Superfluidity
solid
sold
A liquid.
Spread out.
it will move randomly and quickly to fill the empty space in the container..that's how the matter in a gas do to fill the container.. P/s: gas is matter that has mass and occupied space.
it will spread
Gaseous states of matter spread apart to fill the shape and the volume of the container which holds them.
the state of matter that changes shape when placed in a different container is water
gas
Gas state
It will expand to fill the container and change shape to conform to the interior of the container.
Both a gas and a liquid will take the shape of its container.
liquid
...container.
This is the gas.