P13: Kinetic Theory Flashcards
Gas > Liquid
Condensation
Liquid > Gas
Vaporisation/ Boiling
Solid > Liquid
Melting
Liquid > Solid
Solidifying/ Freezing
Solid > Gas
Sublimation
Gas > Solid
Condensation
Vibrate in a fixed position.
Keeps its shape.
Least Energy.
In contact with each other.
Can move around randomly, so has no fixed shape.
Middle Energy
Move about at random much faster.
Much farther apart.
Much lower density.
Most energy
Specific Heat Capacity
Energy needed by 1kg of the substance to raise its temperature by 1oC.
Specific Heat Capacity (J/kgoC) =
Energy Transferred (J)/ Mass (kg) x Temperature Change (oC)
The greater the mass of an object…
… The more slowly its temperature increases when it is heated.
When does evaporation take place?
At any temperature.
When does boiling take place?
At the boiling point
When a pure substance is changing state…
… The temperature stays the same.