Particle Motion in Gases Flashcards
Particle Model of Matter (14 cards)
What is the relationship between temperature and the average energy in kinetic energy stores of gas particles?
The higher the temperature, the higher the average energy in kinetic energy stores.
As the temperature of a gas increases, what happens to the average speed of its particles?
The average speed of its particles increases.
What causes gas pressure in a container?
Gas pressure is caused by particles colliding with the walls of the container and exerting a force.
What happens to gas pressure if the temperature is increased while keeping the volume constant?
Gas pressure increases.
Fill in the blank: Pressure and volume are ______ proportional.
inversely
What is the relationship expressed by the equation pV = constant?
For a gas of fixed mass at a constant temperature, pressure (p) and volume (V) are inversely proportional.
What effect does increasing the volume of a gas have on its pressure at constant temperature?
The gas pressure decreases.
What occurs when a gas container can easily change size in response to pressure changes?
The container may compress or expand due to the overall force.
True or False: Doing work on a gas can increase its internal energy and temperature.
True
How can work be done on a gas mechanically?
By using a bike pump where the gas applies pressure to the plunger.
What happens to the temperature of gas particles when work is done on them?
The temperature increases.
What is the effect of releasing a helium balloon in the atmosphere?
The balloon expands as atmospheric pressure decreases with height.
What is the definition of pressure in the context of gas particles?
Pressure is the force exerted by gas particles on a unit area of the container walls.
Fill in the blank: The outward gas pressure is the total force exerted by all particles in the gas on a unit ______ of the container walls.
area
