If the temperature remains constant, decreasing the volume will increase the pressure.
Assuming temperature and moles of gas remains the same, then decreasing the volume of the gas will increase the pressure. Decreasing the volume enough will result in non ideal behavior.
The pressure increase.
The molecules will not collide as often with the walls decreasing the volume
No, it will not.
As indicated by Charles's Law, at constant pressure, the volume decreases when the temperature decreases. This is due to slowed collisions between molecules.
Decreasing the pressure applied to the gas (apex)
decreasing the volume available for the gas or increasing its temperature
If the temperature of the gas is decreasing, then in order to maintain constant pressure, you would have to compress it in volume.
As the temperature of a gas increases, so does the volume.
Gas tends to take the shape of the volume it's in. If the volume is reduced, then the pressure of the gas will increase.
It affects pressure, not volume.
No, it does affect the volume of a gas according to the ideal gas law (PV=nRT).