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MATSE 201 MIDTERM EXAM
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MATSE 201 MIDTERM EXAM 1. Which is true regarding the crystal systems? A) they completely define a crystal structure B) they describe the shape of the unit cell. C) there are 7 shapes that can completely fill 3D space through translational symmetry D) all of the above. Points Earned...

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  • February 15, 2022
  • 12
  • 2022/2023
  • Exam (elaborations)
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  • matse 201 midterm exam 1 which is true regarding the crystal systems a they completely define a crystal structure b they describe the shape of the unit cell c there are 7 shapes that can c

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MATSE 201 MIDTERM EXAM

1.
Which is true regarding the crystal systems?
A) they completely define a crystal structure
B) they describe the shape of the unit cell.
C) there are 7 shapes that can completely fill 3D space through translational symmetry
D) all of the above.
Points Earned: 2.0/2.0
Correct Answer(s): C



2.
Which of the following is NOT one of the 7 crystal systems?
A) Tetragonal
B) Rhombohedral
C) Trigonal
D) Face centered cubic
Points Earned: 2.0/2.0
Correct Answer(s): D


3.
Elemental metals do not commonly crystallize in which of the following lattices
A) simple cubic
B) face-centered cubic
C) hexagonal close packed
D) body centered cubic.
Points Earned: 2.0/2.0
Correct Answer(s): A

, 4.
Which direction has the highest linear density in a crystal of Cu that crystallizes in the fcc?
A) [100]
B) [110]
C) [111]
D) (110)
Points Earned: 2.0/2.0
Correct Answer(s): B



5.
Which direction has the highest linear density in a crystal of Na that crystallizes in the bcc?
A) [110]
B) [100]
C) [111]
D) (111)
Points Earned: 2.0/2.0
Correct Answer(s): C


6.
In a BCC metal, the plane with the highest planer density is:
A) (100)
B) (110)
C) (111)
D) (200)
Points Earned: 2.0/2.0
Correct Answer(s): B


7.
The closest packed plane in a metal FCC structure is:

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