Topic 3: Thermal Physics Flashcards
1
Q
Under what conditions will a real gas behave like the ideal gas?
A
Low pressure, moderate temperature, low density.
2
Q
What are the assumptions about the kinetic energy of an ideal gas?
A
- No intermolecular forces
2. Molecules undergo perfect elastic collisions
3
Q
Where does pressure come from and what’s the relationship between the change in momentum and force?
A
Pressure originates from the collision between molecules and the wall of the container.
Impulse = change in momentum = force exerted on the wall multiply time.
4
Q
What’s the definition of mole?
A
The amount of substance that contains as many elementary entities as the number of atoms (important) in 12 g of carbon-12.
5
Q
Define Molar Mass
A
the mass of one mole of a substance.
6
Q
Assumption of an ideal gas?
A
Negligible volume/point object
