Pressure and temperature of gases: Particle model of matter: Physics: GCSE (9:1)

Cards (12)

Motion of gas particles
Move very quickly in random directions
Speed of gas particles 
On average, particles in a gas move much quicker than they do in liquids and solids
Temperature of a gas 
Related to the average kinetic energy of the gas molecules
Collision 
When contact is made between two particles, a particle and the wall of its container or a particle and something else in the container
Direction of forces which act due to collisions
At right angles (normal) to the walls of the container
Pressure 
The force exerted over a specific area
Gas pressure 
The pressure caused by collisions between a particle and the walls of its container
Reasons gas pressure increases 
When there are more particles colliding with the walls each second or if the particles are moving faster
Effect on pressure when the temperature of a gas increases
The pressure of the gas also increases providing the mass and the volume of the gas stays the same
Relationship between gas pressure and temperature
The pressure and temperature of a gas are directly proportional
Directly proportional 
When a graph of two variables is a straight line passing through the origin
Reasons why increasing the temperature of a gas also increases the pressure
The gas particles will be travelling faster, will collide with the walls of the container more frequently, and will collide with more force