Volume.
Kinetic theory explains the pressure that a gas exerts on the walls of its container. This describes elastic collisions between the atoms or molecules in the gas with the container's walls, which collectively exert a measureable pressure.
Depends on the strength of the container. A balloon, for instance, won't keep it's shape but a glass jar can within proportion. See Boyle's Law. I oppose gas does not keep the shape of anything that has yet to be inviented
The molecules of the gas are in constant motion and their collisions with the sides of the container exerts a force which is felt as pressure.
The volume of a gas is totally dependent on the container it is in, gas fills its container completely by its particles spreading out. The volume of the container is the same as volume of the gas inside the container. gasses are most commonly measured in SI units (Liters, mililiters, .....).
A gas has no definite shape and will fill any container it's in.
The size of the container determines the volume of a gas. There is also the Ideal Gas Law: PV = nRT Pressure * Volume = Quantity * Gas Constant * Temperature in Kelvin
The container determines the shape.
The container.
the container that it is in
The shape of the gas is determined by the shape of the container (assuming that there is enough gas to fill the container). The volume of the gas is determined by the volume of the container (again assuming that there is enough gas present to fill the container.). When a gas is introduced into any container, it will assume the size and shape of the container if the container is filled. The exception to this rule might be if the pressure of the gas introduced is great enough to influence the shape of the container (i.e. blowing up a balloon).
The container.
That could be a gas tank or a gas can...
Gas will expand without limit. It will fill the container in which it is put.
The shape of the containerA property of a gas is that it expands to fill the shape and volume of a container. An exception may be the case where there is more than one gas and the heavier gasses will tend to settle to the bottom of the container.
Assuming the temperature stays constant and there is no leakage of gas, then if the container decreases in size then the pressure will increase.
An airlock device is used for a container that holds gas. This device allows for the gasses to pass our of a container and not into a gas container. It is a safety mechanism and is used mostly on gas containers.
The weight of the air The distance between particles of a gas determines the pressure. The distance can be decreased and the pressure therefore increased by either increasing the amount of particles of gas in the container, or by reducing the size of the container.