Kinetic Theory Flashcards
Force is measured in?
Newtons (N)
Area is measured in?
m^2, cm^2 or sometimes mm^2
Units of pressure are?
N/m^2, N/cm^2 or N/mm^2
Pressure has another unit which is?
Pascal (Pa)
What can pressure be thought of?
A concentration of a force over a surface area
Large surface = ???
Less pressure
Small surface = ???
A lot of pressure
How does gas cause pressure?
Particles colliding with the wall of a container
How do you convert degrees C to kelvin?
Add 273
What temperature is absolute zero?
0 kelvin/-273 Celsius
Describe arrangement of atoms in a:
· Solid
· Liquid
· And gas
Solid - vibrate
Liquid - move together
Gas - rapid random movement
Describe forces of atoms in a:
· Solid
· Liquid
· And gas
Solid - strong force
Liquid - weak force
Gas - no force
Why do single gas atoms move randomly?
No intermolecular forces between atoms
How does gas produce outward pressure?
· Molecule colliding with wall, a change in momentum
· Produces force on wall
· Considering area of the container, a pressure is exerted
How does pressure increase when gas compressed in smaller volume?
More collisions due to smaller space
If volume of container is same, but gas heated, how is pressure increased?
· Atoms move faster due to increase in kinetic energy
· More collisions
· More pressure
How does increase of mass of gas (number of atoms), increase pressure?
More molecules, more collisions, increased pressure
Pressure increases, volume…?
Decreases
Small pressures produce…?
Large volumes
Large pressures produce…?
Small volumes
Look at pages 22-27
Thanks bro, i really needed it, but maybe not in the situation I’m in on fucking Sunday
Describe each process as ice cube is gently heated
5 processes, include reversal too
- Solid
- Melting (Reversal = freezing)
- Liquid
- Boiling (Reversal = condensing)
- Gas
What is kinetic energy?
A particle has this due to movement of the particles
Can be measured as temperature
What is potential energy?
A substance has this due to bonds breaking and overcoming the molecular attractive forces
Look at pages 30 - 33
I gotchu’ buddy :)
But it’s literally not needed
