Question 1

What two compounds react to form the polymer Nylon?

Accepted Answer

hexamethyl

Question 2

The formation of a ________ polymer generally involves the elimination of a small molecule.

Accepted Answer

A) conversion 
B) vulcanization 
C) monomeric 
D) condensation 
E) polymerization 
A) conversion 
B) vulcanization 
C) monomeric 
D) condensation 
E) polymerization

Question 3

Many metals are ductile,which means that they can be drawn into thin wires.

Accepted Answer

A) True 
 B)False

Question 4

The process of ________ can produce an n-type semiconductor,which can greatly increase intrinsic conductivity.

Accepted Answer

A) melting 
B) fusing 
C) doping 
D) mixing 
E) infusing 
A) melting 
B) fusing 
C) doping 
D) mixing 
E) infusing

Question 5

Quantum dots can be found as particles in semiconductors.What is the average diameter of quantum dots?

Accepted Answer

The answer of Quantum dots can be found as particles...

Question 6

When the size of a semiconductor particle or crystal decreases,the band gap energy ________.

Accepted Answer

A) decreases 
B) remains the same 
C) increases 
D) becomes 1 
E) goes to zero 
A) decreases 
B) remains the same 
C) increases 
D) becomes 1 
E) goes to zero

Question 7

Trends in melting points for metals can be explained with the ________.

Accepted Answer

A) intermolecular model 
B) electron-sea model 
C) thermal conductivity model 
D) covalent bonding model 
E) ionic bonding model 
A) intermolecular model 
B) electron-sea model 
C) thermal conductivity model 
D) covalent bonding model 
E) ionic bonding model

Question 8

An insulator does not conduct electricity.

Accepted Answer

A) True 
 B)False

Question 9

What is the chemical formula for the monomer that forms polyethylene?

Accepted Answer

The answer of What is the chemical formula for the...

Question 10

What is the percent gold in a 14 karat gold ring?

Accepted Answer

A) 86 
B) 58 
C) 14 
D) 42 
E) 1.0 × 102 
A) 86 
B) 58 
C) 14 
D) 42 
E) 1.0 × 102

Question 11

For a substitutional alloy to form,the two metals combined must have similar ________.

Accepted Answer

A) ionization potential and electron affinity 
B) number of valance electrons and electronegativity 
C) reduction potential and size 
D) atomic radii and chemical bonding properties 
E) band gap and reactivity 
A) ionization potential and electron affinity 
B) number of valance electrons and electronegativity 
C) reduction potential and size 
D) atomic radii and chemical bonding properties 
E) band gap and reactivity

Question 12

Vulcanization of natural rubber entails crosslinking reactive polymer chains with sulfur atoms.

Accepted Answer

A) True 
 B)False

Question 13

Thermoplastics cannot be reshaped.

Accepted Answer

A) True 
 B)False

Question 14

________ are solid-state materials that can be made either semiconducting or metallic without any doping.

Accepted Answer

The answer of ________ are solid-state materials that can be...

Question 15

HDPE stands for ________.

Accepted Answer

high-densi

Question 16

Define a primitive cubic lattice.

Accepted Answer

when lattice points

Question 17

Which of the following is a condensation polymer?

Accepted Answer

A) polyvinyl chloride 
B) polyethylene 
C) polypropylene 
D) Nylon 6,6 
E) polystyrene 
A) polyvinyl chloride 
B) polyethylene 
C) polypropylene 
D) Nylon 6,6 
E) polystyrene

Question 18

What are semiconductors?

Accepted Answer

materials characteri

Question 19

Which one of the following is a property of most metals?

Accepted Answer

A) low melting point 
B) brittleness 
C) high electronegativity 
D) thermal conductivity 
E) acidic oxides 
A) low melting point 
B) brittleness 
C) high electronegativity 
D) thermal conductivity 
E) acidic oxides

Question 20

Semiconductors are ________ conductive than metals because of a band gap.

Accepted Answer

The answer of Semiconductors are ________ conductive than metals because...

Exam 12: Solids and Modern Materials

What two compounds react to form the polymer Nylon?

The formation of a ________ polymer generally involves the elimination of a small molecule.

Many metals are ductile,which means that they can be drawn into thin wires.

The process of ________ can produce an n-type semiconductor,which can greatly increase intrinsic conductivity.

Quantum dots can be found as particles in semiconductors.What is the average diameter of quantum dots?

When the size of a semiconductor particle or crystal decreases,the band gap energy ________.

Trends in melting points for metals can be explained with the ________.

An insulator does not conduct electricity.

What is the chemical formula for the monomer that forms polyethylene?

What is the percent gold in a 14 karat gold ring?

For a substitutional alloy to form,the two metals combined must have similar ________.

Vulcanization of natural rubber entails crosslinking reactive polymer chains with sulfur atoms.

Thermoplastics cannot be reshaped.

________ are solid-state materials that can be made either semiconducting or metallic without any doping.

HDPE stands for ________.

Define a primitive cubic lattice.

Which of the following is a condensation polymer?

What are semiconductors?

Which one of the following is a property of most metals?

Semiconductors are ________ conductive than metals because of a band gap.

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

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