Developing Powerful Ideas about Thermal Phenomena

Powerful Idea:

• If equal amounts of hot and cold water, equilibrium T is half way between.
  
• If have a lot of hot water, the equilibrium T is close to but less than initial hot T.
  

• If have a lot of cold water, the equilibrium T is close to but more than initial cold T.
  

Powerful Idea:

• The bigger amount of water will have the smaller change in T (small change in temperature) for (lots of stuff)
  

• The smaller amount of water will have the bigger change in T (big change in temperature) for (not much stuff)