1
Q
What are the two equations for change in energy and when do we use them in Thermodynamics?
A
- ΔE = mcΔθ is used when change in temperature but no change in state
- ΔE = LΔm is used when change in state but no change in temperature
2
Q
What should you do for a thermodynamics question?
A
- Write an energy sentance
- e.g Energy gained to melt the ice = Energy lost from cooling water
- So LΔm = mcΔθ
3
Q
What is Latent heat of fusion?
A
- Solid to Liquid
- Liquid to Solid
4
Q
What is latent heat of vapourisation?
A
- Liquid to Gas
- Gas to Liquid
