This type of property can be obsevered without destroying the substance
The pressure will increase.
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.
If the pressure on a gas is decreased, the volume of the gas will increase. This relationship is described by Boyle's Law, which states that at constant temperature, the pressure of a gas is inversely proportional to its volume. As pressure decreases, the gas particles have more space to move, causing an increase in volume.
To increase the volume of a gas * reduce the pressure, or * increase the temperature, or * add more gas
At a constant volume the pressure increase.
When the temperature of a gas is raised while keeping its pressure constant, the volume of the gas will also increase. This is described by Charles's Law, which states that the volume of a gas is directly proportional to its temperature when pressure is held constant.
It will start to smell. The volume will increase.
The pressure increase.
Applying heat to a gas will make it expand. If the volume of the gas is restricted (i.e. it cannot expand) then the pressure will increase.
As pressure is reduced, the volume of the gas will increase. This is described by Boyle's Law, which states that pressure and volume are inversely proportional. Therefore, as pressure decreases, the gas molecules have more space to move around, causing the gas to expand.
You cannot stretch a gas. If you extend the volume in which some gas is enclosed you are working against the difference in between the external atmospheric pressure and the internal pressure of the gas. As you increase the enclosed volume, the pressure inside there falls and you have to work harder.
If possible, the gas will increase in volume. If it is unable to increase in volume for some reason, it will increase in pressure.