Kinetic Theory Flashcards
3 states of matter?
Solid, liquid and gas
Properties of solids
Fixed shape and volume
Particles held closely together
Vibrate back and forth but don’t change position
Properties of liquids
Fixed volume but can flow to different shapes
Particles held closely together but not as much as solids
Particles can pass each other
Properties of gases
No fixed volume/shape
Fills any available space
Particles are well spaced out and move at high speed
Which state of matter has the most potential energy?
Gas because the particles are the furthest apart
Why do gases have high pressure
From the particles colliding with each other and the walls
Kinetic theory?
Explains the behaviour of different physical states in terms of motion of molecules
How does the pressure of a gas relate to its volume?
The pressure is inversely proportional to the volume
Brownian motion?
Random motion of small particles–> supports kinetic theory
Random bombardment
Potential energy?
Energy stored because of change in position or shape
Evaporation?
Chang in state from liquid to gas due to escape of molecules from surface
- – takes place at all temperatures
- – results in rest of liquid average temp decreasing
What increases evaporation?
Increase in temperature
Increase in surface area
Decrease in pressure
P1V1=
P2V2
P1
———– =
T1(kelvin)
T2(kelvin)
