BME 350 QUIZ 2 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
1. True or false: I am a student in BME 350 studying
materials engineering?
Answer:
true
1 multiple choice option
Question:
2. True or false: I now understand that that structures of the
materials presented in the course textbook and the BME
330 curriculum. That is, the course begins with basic
principles exemplified using "ideal" material structures
and then progressively transitions to more complex
structures representing real materials.
Answer:
true
1 multiple choice option
Question:
3. Materials engineers must understand the structure of
materials. To do so on the supra-atomic level, crystal
systems and lattices were developed. These systems and
lattices serve all purposes listed below except:
Answer:
specifying bond types in crystals, specifying important engineering properties
3 multiple choice options
Question:
4. A crystal lattice consists primarily of ____________________.
Answer:
points
3 multiple choice options
Question:
5. A crystal structure
Answer:
atoms
3 multiple choice options
,Question:
6. Which of the following is (are) not among the Hume-
Rothery rules that specify that relative degree of
solubility of a solute atom in a solid solvent?
Answer:
same number of protons, similar stacking layers, same atomic packing factor,
same row on the periodic table
Question:
7. Crystal systems and Bravais lattices are used by materials
scientist to do which (if any) of the following.
Answer:
describe direction of in crystals, describe the position of atoms in a crystal,
describes planes in crystal
Question:
8. How many parameters are available to crystallographers
to quantify the general 3D unit cell of a crystal?
Answer:
6
3 multiple choice options
Question:
9. A key theme throughout the course is that material
structures affects material properties. Analysis of material
structure begins by consideration of the crystalline
nature of materials (if such materials are crystalline). In
your text it was noted that FCC and HCP have similarities
as well as differences. A major difference between FCC
and HCP unit cells of crystalline materials is that they
have:
Answer:
significant differences in material properties
3 multiple choice options
Question:
10. True or false: lattice points do not refer to specific atoms
in crystals
Answer:
true
1 multiple choice option
, Question:
11. Assuming no variation in atomic dimensions among the
considered structures, which of the following crystal
structures have the most empty space in a unit cell?
Answer:
body centered cubic structures
3 multiple choice options
Question:
12. What are x-rays so useful for studying materials?
Answer:
all the above
3 multiple choice options
Question:
13. Which of the following is not one of the types of Bravais
lattices noted in your textbook?
Answer:
self-centered
3 multiple choice options
Question:
14. True or false: more than one atom can be associated with
lattice point.
Answer:
True
1 multiple choice option
Question:
15. True or False: while most metals are 99+% crystalline, they
are generally not composed of a perfect single crystal>
Answer:
true
1 multiple choice option
Question:
16. At 573 degrees C, silica (SiO2) did not change its
fundamental composition, but the ________________________ of
the crystal tetrahedra comprising this structure did
change.
Answer:
orientations
3 multiple choice options
CORRECT ANSWERS
Question:
1. True or false: I am a student in BME 350 studying
materials engineering?
Answer:
true
1 multiple choice option
Question:
2. True or false: I now understand that that structures of the
materials presented in the course textbook and the BME
330 curriculum. That is, the course begins with basic
principles exemplified using "ideal" material structures
and then progressively transitions to more complex
structures representing real materials.
Answer:
true
1 multiple choice option
Question:
3. Materials engineers must understand the structure of
materials. To do so on the supra-atomic level, crystal
systems and lattices were developed. These systems and
lattices serve all purposes listed below except:
Answer:
specifying bond types in crystals, specifying important engineering properties
3 multiple choice options
Question:
4. A crystal lattice consists primarily of ____________________.
Answer:
points
3 multiple choice options
Question:
5. A crystal structure
Answer:
atoms
3 multiple choice options
,Question:
6. Which of the following is (are) not among the Hume-
Rothery rules that specify that relative degree of
solubility of a solute atom in a solid solvent?
Answer:
same number of protons, similar stacking layers, same atomic packing factor,
same row on the periodic table
Question:
7. Crystal systems and Bravais lattices are used by materials
scientist to do which (if any) of the following.
Answer:
describe direction of in crystals, describe the position of atoms in a crystal,
describes planes in crystal
Question:
8. How many parameters are available to crystallographers
to quantify the general 3D unit cell of a crystal?
Answer:
6
3 multiple choice options
Question:
9. A key theme throughout the course is that material
structures affects material properties. Analysis of material
structure begins by consideration of the crystalline
nature of materials (if such materials are crystalline). In
your text it was noted that FCC and HCP have similarities
as well as differences. A major difference between FCC
and HCP unit cells of crystalline materials is that they
have:
Answer:
significant differences in material properties
3 multiple choice options
Question:
10. True or false: lattice points do not refer to specific atoms
in crystals
Answer:
true
1 multiple choice option
, Question:
11. Assuming no variation in atomic dimensions among the
considered structures, which of the following crystal
structures have the most empty space in a unit cell?
Answer:
body centered cubic structures
3 multiple choice options
Question:
12. What are x-rays so useful for studying materials?
Answer:
all the above
3 multiple choice options
Question:
13. Which of the following is not one of the types of Bravais
lattices noted in your textbook?
Answer:
self-centered
3 multiple choice options
Question:
14. True or false: more than one atom can be associated with
lattice point.
Answer:
True
1 multiple choice option
Question:
15. True or False: while most metals are 99+% crystalline, they
are generally not composed of a perfect single crystal>
Answer:
true
1 multiple choice option
Question:
16. At 573 degrees C, silica (SiO2) did not change its
fundamental composition, but the ________________________ of
the crystal tetrahedra comprising this structure did
change.
Answer:
orientations
3 multiple choice options
