Ideal gas molecules Flashcards
Unit for temperature
Degrees celsius (°C)
Unit for thermodynamic temperature
Kelvin (K)
Unit for energy
Joule (J)
Unit for mass
Kilogram (Kg)
Unit for density
Kilogram/ metre^3 (Kg/m^3)
Unit for length
Metre (m)
Unit for area
Metre^2 (m^2)
Unit for volume
Metre^3 (m^3)
Unit for speed/ velocity
Metre/ second (m/s)
Unit for force
Newton (N)
Unit for acceleration
Metre/ second^2 (m/s^2)
Unit for pressure/ stress
Pascal (Pa)
Do gases exert forces?
Yes, they randomly move and when they collide with something they exert a force on it and their momentum and direction changes
Do gases exert pressure on containers?
Yes, they smash against container walls creating an outwards pressure (if heated up particles move faster therefore creating a higher pressure.
What is absolute zero?
0 kelvins/ -273°C
How does absolute zero occur?
If you cool a substance down, the energy reduces meaning the kinetic energy is less therefore slowing down
What happens if you increase the temperature of a substance?
The particles gain more energy which causes them to move faster
What is the relationship between kelvin temperature of a gas and average kinetic energy of molecules?
The kelvin temperature of a gas is proportional to the average kinetic energy of its molecules
Whats the equation for the relationship between the pressure and Kelvin temperature of a fixed mass of
gas at constant volume?
Pressure/temperature(kelvin) = constant
p1/T1 = p2/T2
P1 and T1 - starting conditions
p2 and T2 - final conditions
Whats the equation for the relationship between the pressure and volume of a fixed mass of gas at constant temperature?
Pressure x volume = constant
p1V1 = p2V2
p1 and V1 - starting conditions
p2 and V2 - final conditions
