Answer the following questions with regard to an alloy of copper with 64 % lead that is slowly cooled in a crucible without being stirred from 1100oC to room temperature.
a.) What is the nature of the alloy at 1100oC?
b.) Now consider the alloy at a temperature just above the monotectic temperature at 955oC where it is composed of two liquids of different compositions. Do the liquids have the same density? If not, what would you expect to happen?
c.) One of these liquids has teh composition of the monotectic point? What should happen to this liquid as it passes through the monotectic temperature of 955oC? Describe the physical nature of the contents of the crucible after the alloy is cooled below 955oC and until it reaches the eutectic temperature at 326oC?