Change the pressure or change the temperature. Volume changes inversely with pressure and directly with temperature. That is to say, if you squeeze it, it gets smaller. If you heat it, it gets bigger.
does gas take the shape of it's container and can change volume
If the space in which the gas is inside doesn't change, the volume of gas doesn't change
The volume decreases
Change the pressure and/or the temperature of the gas.
If the space in which the gas is inside doesn't change, the volume of gas doesn't change
As the temperature of a gas increases, so does the volume.
Because gas takes the shape of it's container, it can change volume quite easily. No matter what container you put it in, a gas takes that shape and volume.
That's because they are quite easily compressible. There are no forces holding the gas particles together. (apex)
The matter that can change shape and volume is gas.
gas has no specific volume because the molecules can be compressed or expanded, which would change the volume. like there is a smaller volume of gas in a can of soda then in the atmesphere around you.
When a gas is heated, its' volume increases.
If you increase the volume of the container, and not the gas itself, then the pressure decreases. If you increase the volume of the gas, and not the container, then the pressure increases.