P1.2.4 - Specific Latent Heat Flashcards
1
Q
How do you change a substances state?
A
You heat or cool it
2
Q
Name the changes from each state
A
Solid to Gas - Subliming Solid to Liquid - Melting Gas to Solid - Depositing Gas to Liquid - Condensing Liquid to Solid - Freezing or Solidifying Liquid to Gas - Vaporising or Boiling
3
Q
What is specific latent heat of fusion (or melting)?
A
The energy transferred when 1kg of substance changes from solid to liquid or liquid to solid
4
Q
What is the specific latent heat of vaporisation?
A
Energy transferred when 1kg of a substance changes from liquid to gas
5
Q
What is the equation that uses specific latent heat?
A
Thermal energy Mass Specific For a change = (Kg) X Latent In state (J) Heat (J/Kg)
6
Q
What is the difference specific latent heat and specific heat capacity?
A
Latent heat is about change of state
Heat capacity is about change of temperature
