Question 1

When an X-ray beam with a wavelength of 120 pm strikes the surface of a crystal with a lattice spacing of 165 nm,what is the maximum reflection angle with a value of n=1?

Accepted Answer

A)   54.0°
B)   21.3°
C)   32.6°
D)   18.4°
E)   38.3°F) B) and C)
G) D) and E)

Question 2

Which of the following represent the addition polymer formed from the compound below?
CH2=CHCl

Accepted Answer

A)   2=CHCl 
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G) A) and B)

Question 3

Which of the following can act as a p-type semiconductor for silicon?

Accepted Answer

A)   fluorine
B)   gallium
C)   oxygen
D)   phosphorus
E)   arsenicF) A) and B)
G) B) and C)

Question 4

Which of the following substances should have the highest melting point?

Accepted Answer

A)   Fe
B)   Ne
C)   Xe
D)   N2
E)   COF) C) and D)
G) All of the above

Question 5

How many H- ions are around each Na+ ion in NaH,which has a cubic unit cell with H- ions on each corner and each face?

Accepted Answer

A)   1
B)   4
C)   6
D)   8E) None of the above
F) A) and B)

Question 6

Which of the following is considered a nonbonding atomic solid?

Accepted Answer

A)   Ne
B)   Cu
C)   I2
D)   Ca
E)   KF) All of the above
G) A) and E)

Question 7

Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Accepted Answer

A)   204 pm
B)   288 pm
C)   333 pm
D)   407 pmE) A) and D)
F) A) and B)

Question 8

In a semiconductor,the bonding molecular orbitals that contain electrons are referred to as the ________,while the antibonding orbitals that are completely empty are referred to as the ________.

Accepted Answer

A)   single bond, antibond
B)   conduction band, valence band
C)   valence band, conduction band
D)   n-type, p-type
E)   p-type, n-typeF) D) and E)
G) B) and D)

Question 9

A common use of polyvinyl chloride is

Accepted Answer

A)   plumbing.
B)   paint.
C)   plastic bottles.
D)   styrofoam.
E)   all of the above.F) B) and D)
G) A) and B)

Question 10

A metal crystallizes in a face centered cubic structure and has a density of 11.9 g/cm3.If the radius of the metal atom is 138 pm,what is the identity of the metal?

Accepted Answer

A)   At
B)   Pd
C)   Mn
D)   Fe
E)   CrF) A) and C)
G) D) and E)

Question 11

Identify the copolymer.

Accepted Answer

A)   nylon 6,6
B)   polyvinyl chloride
C)   polyethylene
D)   polypropylene
E)   polystyreneF) None of the above
G) A) and B)

Question 12

Na Cl crystallizes in a cubic unit cell with Cl- ions on each corner and each face.How many Na+ and Cl- ions are in each unit cell of Na Cl?

Accepted Answer

A)   1 Na+ ion and 1 Cl- ion
B)   2 Na+ ions and 2 Cl- ions
C)   4 Na+ ions and 4 Cl- ions
D)   8 Na+ ions and 8 Cl- ionsE) None of the above
F) B) and D)

Question 13

Identify the type of solid for diamond.

Accepted Answer

A)   metallic atomic solid
B)   ionic solid
C)   nonbonding atomic solid
D)   molecular solid
E)   networking atomic solidF) All of the above
G) B) and C)

Question 14

Identify the type of solid for gold.

Accepted Answer

A)   metallic atomic solid
B)   ionic solid
C)   nonbonding atomic solid
D)   molecular solid
E)   networking atomic solidF) A) and D)
G) B) and E)

Question 15

A polymer that eliminates an atom or small group of atoms is known as a(n)

Accepted Answer

A)   addition polymer
B)   condensation polymer
C)   dimer
D)   copolymer
E)   substituted polymerF) C) and D)
G) A) and B)

Question 16

A common use of polyethylene is

Accepted Answer

A)   insulation.
B)   bottles.
C)   pipe fitting.
D)   film for meat packaging.
E)   carpet fibers.F) A) and B)
G) A) and D)

Question 17

What material needs to be added to portland cement in order to form concrete?

Accepted Answer

A)   neon
B)   nitrogen
C)   lead
D)   sand
E)   soda ashF) A) and E)
G) A) and D)

Question 18

All of the following are examples of allotropes of carbon EXCEPT

Accepted Answer

A)   graphite
B)   glass
C)   diamond
D)   graphine
E)   all of the aboveF) C) and D)
G) A) and D)

Question 19

Which of the following is considered a molecular solid?

Accepted Answer

A)   Au
B)   NH4NO3
C)   I2
D)   Rn
E)   None of these is a molecular solid.F) B) and D)
G) A) and C)

Question 20

Which of the following forms a molecular solid?

Accepted Answer

A)   CaO   
B)   C10H22  
C)   C, graphite
D)   goldE) A) and C)
F) All of the above

Exam 13: Crystalline Solids and Modern Materials

Which of the following forms a molecular solid?

Correct AnswerverifiedShow Answer

A polymer that eliminates an atom or small group of atoms is known as a(n)

Correct AnswerverifiedShow Answer

How many H- ions are around each Na+ ion in NaH,which has a cubic unit cell with H- ions on each corner and each face?

Correct AnswerverifiedShow Answer

Identify the copolymer.

Correct AnswerverifiedShow Answer

Which of the following can act as a p-type semiconductor for silicon?

Correct AnswerverifiedShow Answer

When an X-ray beam with a wavelength of 120 pm strikes the surface of a crystal with a lattice spacing of 165 nm,what is the maximum reflection angle with a value of n=1?

Correct AnswerverifiedShow Answer

A common use of polyvinyl chloride is

Correct AnswerverifiedShow Answer

In a semiconductor,the bonding molecular orbitals that contain electrons are referred to as the ________,while the antibonding orbitals that are completely empty are referred to as the ________.

Correct AnswerverifiedShow Answer

A common use of polyethylene is

Correct AnswerverifiedShow Answer

Which of the following substances should have the highest melting point?

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Which of the following is considered a nonbonding atomic solid?

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All of the following are examples of allotropes of carbon EXCEPT

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Which of the following represent the addition polymer formed from the compound below? CH2=CHCl

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What material needs to be added to portland cement in order to form concrete?

Correct AnswerverifiedShow Answer

Identify the type of solid for diamond.

Correct AnswerverifiedShow Answer

Gold crystallizes in a face-centered cubic structure.What is the edge length of the unit cell if the atomic radius of gold is 144 pm?

Correct AnswerverifiedShow Answer

Identify the type of solid for gold.

Correct AnswerverifiedShow Answer

A metal crystallizes in a face centered cubic structure and has a density of 11.9 g/cm3.If the radius of the metal atom is 138 pm,what is the identity of the metal?

Correct AnswerverifiedShow Answer

Na Cl crystallizes in a cubic unit cell with Cl- ions on each corner and each face.How many Na+ and Cl- ions are in each unit cell of Na Cl?

Correct AnswerverifiedShow Answer

Which of the following is considered a molecular solid?

Correct AnswerverifiedShow Answer

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How many H^- ions are around each Na⁺ ion in NaH,which has a cubic unit cell with H^- ions on each corner and each face?

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In a semiconductor,the bonding molecular orbitals that contain electrons are referred to as the ,while the antibonding orbitals that are completely empty are referred to as the .

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Which of the following represent the addition polymer formed from the compound below? CH₂=CHCl

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A metal crystallizes in a face centered cubic structure and has a density of 11.9 g/cm³.If the radius of the metal atom is 138 pm,what is the identity of the metal?

Correct Answer
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Na Cl crystallizes in a cubic unit cell with Cl^- ions on each corner and each face.How many Na⁺ and Cl^- ions are in each unit cell of Na Cl?

Correct Answer
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Correct Answer
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