Question 1

How do luminescent materials release light?

Accepted Answer

A) By returning from an excited state to a lower,but still excited state. 
B) By the absorption of any wavelength radiation. 
C) By the absorption of light photons. 
D) By returning from an excited state to a lower energy state. 
E) Through an applied electric voltage. 
A) By returning from an excited state to a lower,but still excited state. 
B) By the absorption of any wavelength radiation. 
C) By the absorption of light photons. 
D) By returning from an excited state to a lower energy state. 
E) Through an applied electric voltage.

Question 2

delocalized pi-bonds are the reason carbon nano-tubes conduct electricity.

Accepted Answer

A) True 
 B)False

Question 3

How can quantum dots be made?

Accepted Answer

A) In solution. 
B) By depositing atoms on a surface. 
C) At high temperature. 
D) Both A and B. 
E) Both A and C. 
A) In solution. 
B) By depositing atoms on a surface. 
C) At high temperature. 
D) Both A and B. 
E) Both A and C.

Question 4

What do the current high temperature superconductors have in common?

Accepted Answer

A) They are all metals.  
B) They are all non-metals.  
C) They are all undoped materials.  
D) They are ceramic oxides.  
E) Nothing.There is nothing in common.  
A) They are all metals.  
B) They are all non-metals.  
C) They are all undoped materials.  
D) They are ceramic oxides.  
E) Nothing.There is nothing in common.

Question 5

Glass has numerous,microscopic and macroscopic crystalline regions.

Accepted Answer

A) True 
 B)False

Question 6

Why is gravel often used as a filler in concrete?

Accepted Answer

A) Because it is hard. 
B) Because it is inexpensive. 
C) It is easily deformable. 
D) Because it is a granite. 
E) Gravel is not a filler in concrete. 
A) Because it is hard. 
B) Because it is inexpensive. 
C) It is easily deformable. 
D) Because it is a granite. 
E) Gravel is not a filler in concrete.

Question 7

Which of the following is a naturally occurring form of calcium carbonate?

Accepted Answer

A) Quartz. 
B) Limestone. 
C) Silica. 
D) Cristobalite. 
E) Silicate. 
A) Quartz. 
B) Limestone. 
C) Silica. 
D) Cristobalite. 
E) Silicate.

Question 8

For a substance to be considered a nano-material what criterion must be met?

Accepted Answer

A) It must have non-separable energy levels. 
B) It must be in finely divided powder form. 
C) It must contain a metal suspension. 
D) It must have a particle size in the range 1 - 100 nm. 
E) It must be both lightweight and remarkably strong as a macroscopic material. 
A) It must have non-separable energy levels. 
B) It must be in finely divided powder form. 
C) It must contain a metal suspension. 
D) It must have a particle size in the range 1 - 100 nm. 
E) It must be both lightweight and remarkably strong as a macroscopic material.

Question 9

What is the major component of pewter?

Accepted Answer

A) Antimony 
B) Zinc 
C) Tin 
D) Copper 
E) Iron 
A) Antimony 
B) Zinc 
C) Tin 
D) Copper 
E) Iron

Question 10

Which mineral is a common form of crystalline calcium carbonate?.

Accepted Answer

A) Carbonite. 
B) Calcite. 
C) Aragonite. 
D) B and C,above. 
E) A and C,above. 
A) Carbonite. 
B) Calcite. 
C) Aragonite. 
D) B and C,above. 
E) A and C,above.

Question 11

To what is the boron nitride structure related?

Accepted Answer

A) Cement. 
B) Silicon. 
C) Carbon. 
D) Metal alloys. 
E) Elemental metals. 
A) Cement. 
B) Silicon. 
C) Carbon. 
D) Metal alloys. 
E) Elemental metals.

Question 12

What form do single walled nano-tubes take?

Accepted Answer

A) "Armchair." 
B) Chiral. 
C) Zig-zag. 
D) All of the above. 
E) None of the above. 
A) "Armchair." 
B) Chiral. 
C) Zig-zag. 
D) All of the above. 
E) None of the above.

Question 13

How does conduction in a semi-conductor compare to that in a metal?

Accepted Answer

A) It is better. 
B) It is worse. 
C) It is very nearly the same. 
D) It is higher at low temperatures,and lower at high temperatures. 
A) It is better. 
B) It is worse. 
C) It is very nearly the same. 
D) It is higher at low temperatures,and lower at high temperatures.

Question 14

What makes emery different from corundum?

Accepted Answer

A) Impure micro-crystals make up corundum. 
B) Impure micro-crystals make up emery. 
C) Corundum is almost pure silicate. 
D) Emery is almost pure silicate. 
E) Nothing; they are actually the same material. 
A) Impure micro-crystals make up corundum. 
B) Impure micro-crystals make up emery. 
C) Corundum is almost pure silicate. 
D) Emery is almost pure silicate. 
E) Nothing; they are actually the same material.

Question 15

What makes phosphors glow?

Accepted Answer

A) Electron impacts. 
B) Plasma discharges. 
C) Irradiation with UV 
D) Both A and C,above. 
E) None of the above. 
A) Electron impacts. 
B) Plasma discharges. 
C) Irradiation with UV 
D) Both A and C,above. 
E) None of the above.

Question 16

In nano-materials,such as quantum dots,the broad band of energy may give rise to transitions in the visible region of the spectrum.

Accepted Answer

A) True 
 B)False

Question 17

Composite materials combine two or more substances,yet they retain their individual characteristics.

Accepted Answer

A) True 
 B)False

Question 18

What is the minimum pressure and temperature for diamond formation?

Accepted Answer

A) 8kbar,150S1U1P1$\circ$S1S1P0C 
B) 800kbar,15,000S1U1P1$\circ$S1S1P0C 
C) 80 kbar,15,000S1U1P1$\circ$S1S1P0C 
D) 800kbar,1,500S1U1P1$\circ$S1S1P0C 
E) 80kbar,1,500S1U1P1$\circ$S1S1P0C 
A) 8kbar,150S1U1P1$\circ$S1S1P0C 
B) 800kbar,15,000S1U1P1$\circ$S1S1P0C 
C) 80 kbar,15,000S1U1P1$\circ$S1S1P0C 
D) 800kbar,1,500S1U1P1$\circ$S1S1P0C 
E) 80kbar,1,500S1U1P1$\circ$S1S1P0C

Question 19

Which is a feature of solid electrolytes?

Accepted Answer

A) Electrons move through their lattices.  
B) Ions move through their lattices.  
C) Atoms move through them.  
D) Atoms lose electrons within them.  
E) Atoms gain electrons within them.  
A) Electrons move through their lattices.  
B) Ions move through their lattices.  
C) Atoms move through them.  
D) Atoms lose electrons within them.  
E) Atoms gain electrons within them.

Question 20

How does water interact with clay and limestone in the making of cement?

Accepted Answer

A) It must be completely water free.  
B) It produces hydrates and hydroxides.  
C) It degrades the limestone.  
D) It forms slaked lime.  
E) It washes away the silicates.  
A) It must be completely water free.  
B) It produces hydrates and hydroxides.  
C) It degrades the limestone.  
D) It forms slaked lime.  
E) It washes away the silicates.

How do luminescent materials release light?

delocalized pi-bonds are the reason carbon nano-tubes conduct electricity.

How can quantum dots be made?

What do the current high temperature superconductors have in common?

Glass has numerous,microscopic and macroscopic crystalline regions.

Why is gravel often used as a filler in concrete?

Which of the following is a naturally occurring form of calcium carbonate?

For a substance to be considered a nano-material what criterion must be met?

What is the major component of pewter?

Which mineral is a common form of crystalline calcium carbonate?.

To what is the boron nitride structure related?

What form do single walled nano-tubes take?

How does conduction in a semi-conductor compare to that in a metal?

What makes emery different from corundum?

What makes phosphors glow?

In nano-materials,such as quantum dots,the broad band of energy may give rise to transitions in the visible region of the spectrum.

Composite materials combine two or more substances,yet they retain their individual characteristics.

What is the minimum pressure and temperature for diamond formation?

Which is a feature of solid electrolytes?

How does water interact with clay and limestone in the making of cement?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Thermodynamics: The First Law

Thermodynamics: The Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the Main Group Elements

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

Exam 7: Inorganic Materials

How do luminescent materials release light?

delocalized pi-bonds are the reason carbon nano-tubes conduct electricity.

How can quantum dots be made?

What do the current high temperature superconductors have in common?

Glass has numerous,microscopic and macroscopic crystalline regions.

Why is gravel often used as a filler in concrete?

Which of the following is a naturally occurring form of calcium carbonate?

For a substance to be considered a nano-material what criterion must be met?

What is the major component of pewter?

Which mineral is a common form of crystalline calcium carbonate?.

To what is the boron nitride structure related?

What form do single walled nano-tubes take?

How does conduction in a semi-conductor compare to that in a metal?

What makes emery different from corundum?

What makes phosphors glow?

In nano-materials,such as quantum dots,the broad band of energy may give rise to transitions in the visible region of the spectrum.

Composite materials combine two or more substances,yet they retain their individual characteristics.

What is the minimum pressure and temperature for diamond formation?

Which is a feature of solid electrolytes?

How does water interact with clay and limestone in the making of cement?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Thermodynamics: The First Law

Thermodynamics: The Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the Main Group Elements

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters