You have a large rectangular containerof baseballsfor batting practice. You notice that they seem to haveformed a regularly packed, cubic based, crystal. (A)Many of the same concepts of metallic crystals that we discussed in class can be applied to macroscopicobject-basedcrystals, such as baseball crystals. Although thesebaseball crystals can be good intuition builders for atomiccrystals, baseballs are not atoms/ions. When discussing metallic crystals in class, we discussed some important aspects of atoms/ions that we consider when considering that atoms form crystals. Aside from having
a uniform size, whatbasicassumption about atoms do we make that we can also make about baseballs? Explain.

(B)What is a criticaldifference between atoms and baseballsthat likely influences things such as the energy of the surfaceof the crystal?Explain. Propose a modification that you could make tothe baseballs to help capture, albeit inaccurately, this aspect of atoms.
(C)Your friend challenges you topredict whether the crystal structure is FCC, BCC, or SC, based on the height of thebaseball crystal. You agree, but you want one more piece of information. What doyou need to know?Explain how you would distinguish between the different crystal structures with this information.
(D)If the baseball crystal were FCC, how would you expect the atomic packing factor to differ from the atomic packing factor of the FCC aluminum?Explain your reasoning. (E)Estimate the density of a FCC baseball crystal. (Actually calculate this.) Is the density different from FCC aluminum? Explain why given your reasoning of atomic packing factor above.
(F)If oneping-pong ball was introduced to the baseballs when they were being put in the container, what kind of defect would you expect this to introduce to thebaseballcrystal? Explain.
(G)If one softball was introduced to the baseballs when they were being put into the container, what kind of defect would you expect this to introduce to the baseball crystal? Explain.
(H)What is one other type of defect thatis visible inthis baseball crystal?Explain.(I)Discuss one way that you could “process”this baseball crystal to alter the structure or defects.