Question 1

The class of ________ has a diamond crystal structure.

Accepted Answer

A) molecular semiconductors 
B) elemental conductors 
C) elemental semiconductors 
D) nonmetal semiconductors 
E) none of the above 
A) molecular semiconductors 
B) elemental conductors 
C) elemental semiconductors 
D) nonmetal semiconductors 
E) none of the above

Question 2

What is doping in the semiconductor field?

Accepted Answer

the process of addin

Question 3

An unknown metal crystallizes in a primitive cubic unit cell.The length of the unit cell edge is 2.85 Å.The radius of the unknown atom is ________ Å.

Accepted Answer

A) 5.70 
B) 1.43 
C) 1.85 
D) 1.01 
E) Insufficient data is given. 
A) 5.70 
B) 1.43 
C) 1.85 
D) 1.01 
E) Insufficient data is given.

Question 4

All of the following statements about steel are true except ________.

Accepted Answer

A) it is an alloy of iron 
B) it can have different percentages of carbon 
C) it is a monomer 
D) it can be made so it resists rust 
E) none of the above 
A) it is an alloy of iron 
B) it can have different percentages of carbon 
C) it is a monomer 
D) it can be made so it resists rust 
E) none of the above

Question 5

All of the following are classified as a nanomaterial except ________.

Accepted Answer

A) carbon nanotubes 
B) buckminsterfullerene 
C) isoprene 
D) graphene 
E) All of the above are classified as nanomaterials 
A) carbon nanotubes 
B) buckminsterfullerene 
C) isoprene 
D) graphene 
E) All of the above are classified as nanomaterials

Question 6

Which category of plastics is the most difficult to recycle?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 5 
E) 7 
A) 1 
B) 2 
C) 3 
D) 5 
E) 7

Question 7

Polyethylene is formed by a condensation reaction.

Accepted Answer

A) True 
 B)False

Question 8

The unit cell with all sides the same length and all angles equal to 90° that has lattice points only at the corners is called ________.

Accepted Answer

A) monoclinic 
B) body-centered cubic 
C) primitive cubic 
D) face-centered cubic 
E) spherical cubic 
A) monoclinic 
B) body-centered cubic 
C) primitive cubic 
D) face-centered cubic 
E) spherical cubic

Question 9

The dopant atoms in an ________ semiconductor have more electrons than the host material.

Accepted Answer

The answer of The dopant atoms in an ________ semiconductor...

Question 10

How many valence electrons do inorganic compounds contain if they are considered semiconductors?

Accepted Answer

A) 2 
B) 1 
C) 4 
D) 5 
E) 3 
A) 2 
B) 1 
C) 4 
D) 5 
E) 3

Question 11

Which one of the following is an addition polymer with the same structure as polyethylene except that one hydrogen on every other carbon is replaced by a benzene ring?

Accepted Answer

A) polyvinyl alcohol 
B) polystyrene 
C) polyethylene 
D) polyethylene glycol 
E) Teflon 
A) polyvinyl alcohol 
B) polystyrene 
C) polyethylene 
D) polyethylene glycol 
E) Teflon

Question 12

The ________ of light waves upon passing through a narrow slit is called diffraction.

Accepted Answer

A) diffusion 
B) scattering 
C) grating 
D) adhesion 
E) incidence 
A) diffusion 
B) scattering 
C) grating 
D) adhesion 
E) incidence

Question 13

An elastomer will fail to regain its original dimensions following a distortion beyond its ________.

Accepted Answer

A) glass transition 
B) phase boundary 
C) London force 
D) crystallinity 
E) elastic limit 
A) glass transition 
B) phase boundary 
C) London force 
D) crystallinity 
E) elastic limit

Question 14

All of the following are a type of solid except ________.

Accepted Answer

A) supercritical 
B) ionic 
C) molecular 
D) covalent network 
E) metallic 
A) supercritical 
B) ionic 
C) molecular 
D) covalent network 
E) metallic

Question 15

What is the percent gold in a 10 karat gold necklace?

Accepted Answer

A) 10 
B) 58 
C) 90 
D) 1.0 × 102 
E) 42 
A) 10 
B) 58 
C) 90 
D) 1.0 × 102 
E) 42

Question 16

Which monomer is polymerized to make natural rubber?

Accepted Answer

A) urethane 
B) ethylene 
C) styrene 
D) isoprene 
E) propylene 
A) urethane 
B) ethylene 
C) styrene 
D) isoprene 
E) propylene

Question 17

The type of solid that is characterized by low melting point,softness,and low electrical conduction is a molecular solid.

Accepted Answer

A) True 
 B)False

Question 18

Define a face-centered cubic lattice.

Accepted Answer

when lattice points

Question 19

Which of the following lattices is one of the seven primitive three-dimensional lattices in which the relationship between the lattice vectors a,b,and c can be written as: a ≠ b ≠ c?

Accepted Answer

A) rhombohedral 
B) hexagonal 
C) tetragonal 
D) monoclinic 
E) cubic 
A) rhombohedral 
B) hexagonal 
C) tetragonal 
D) monoclinic 
E) cubic

Question 20

Metallic solids exhibit all of the following except ________.

Accepted Answer

A) thermal conductivity 
B) brittleness 
C) electrical conductivity 
D) variable melting point 
E) variable hardness 
A) thermal conductivity 
B) brittleness 
C) electrical conductivity 
D) variable melting point 
E) variable hardness

Exam 12: Solids and Modern Materials

The class of ________ has a diamond crystal structure.

What is doping in the semiconductor field?

An unknown metal crystallizes in a primitive cubic unit cell.The length of the unit cell edge is 2.85 Å.The radius of the unknown atom is ________ Å.

All of the following statements about steel are true except ________.

All of the following are classified as a nanomaterial except ________.

Which category of plastics is the most difficult to recycle?

Polyethylene is formed by a condensation reaction.

The unit cell with all sides the same length and all angles equal to 90° that has lattice points only at the corners is called ________.

The dopant atoms in an ________ semiconductor have more electrons than the host material.

How many valence electrons do inorganic compounds contain if they are considered semiconductors?

Which one of the following is an addition polymer with the same structure as polyethylene except that one hydrogen on every other carbon is replaced by a benzene ring?

The ________ of light waves upon passing through a narrow slit is called diffraction.

An elastomer will fail to regain its original dimensions following a distortion beyond its ________.

All of the following are a type of solid except ________.

What is the percent gold in a 10 karat gold necklace?

Which monomer is polymerized to make natural rubber?

The type of solid that is characterized by low melting point,softness,and low electrical conduction is a molecular solid.

Define a face-centered cubic lattice.

Which of the following lattices is one of the seven primitive three-dimensional lattices in which the relationship between the lattice vectors a,b,and c can be written as: a ≠ b ≠ c?

Metallic solids exhibit all of the following except ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters