Particle Theory And Gases Flashcards
What is the relationship between kinetic energy and temp
The temperature in gas (in kelvins) is proportional to the average kinetic energy of it’s particles
What is particle theory
Thy gases consist of very small particles which are constantly moving in completely random directions
Particles constantly collide with each other and the walls
What is Brownian motion
The zigzag and random movement of particles in a suspension
Large heavy particles can be moved with Brownian motion by smaller, lighter particles travelling at high speeds
What is absolute zero
It is the start of the Kelvin scale
The coldest anything can be is -273’C, atoms have as little amount of kinetic energy as it’s possible to get
How do you convert Celsius to kelvin
C= K + 273
Gas particles and pressure
Gas particles move about and randomly collide, exerting a force
When they collide into container walls they create an outward pressure
The pressure depends how fast and how often they collide
What happens when you get the gas
The particles move faster and have more kinetic energy
Therefore the particles hit the container harder creating more pressure
Relationship between temp and pressure
The higher the temperature the higher the pressure
Why happens when you put the same amount of has in a larger container
The pressure will decrease
Wen the volume is reduced the particles get more squashed up and so hot the walls more often, hence the pressure increases
What is the equation for pressure and temp at a constant volume
Pressure. = constant
Temperature
P1/T1= P2/T2
Equation for pressure and volume at a constant temperature (Boyle’s Law)
Pressure x volume = constant
P1 x V1 = P2 x V2
What is average KE in a gas proportional to
Average KE of particles in a gas is proportional in Kelvin temperature
