Question 1

A new material will be recognized as a metal if

Accepted Answer

A) Its electrical resistivity is independent of temperature. 
B) Its conductivity increases with increasing temperature. 
C) Its conductivity decreases with increasing temperature. 
D) Its electrical resistivity is zero. 
A) Its electrical resistivity is independent of temperature. 
B) Its conductivity increases with increasing temperature. 
C) Its conductivity decreases with increasing temperature. 
D) Its electrical resistivity is zero. C

Question 2

Glycerol,C3H8O3,has a higher viscosity than propanol,C3H8O.True or false?

Accepted Answer

A) True 
 B)False  True

Question 3

The ability of water to "wet" paper is due to hydrogen bonding between water molecules and surface molecules in the paper.True or false?

Accepted Answer

A) True 
 B)False  True

Question 4

Butane and 2-propanone have approximately the same boiling points.True or false?

Accepted Answer

A) True 
 B)False

Question 5

The atomic radius of aluminum is 143 pm.Estimate its density,given that the metal has a close-packed structure.

Accepted Answer

A) 3.87 g.cm-3  
B) 5.54 g.cm-3  
C) 7.92 g.cm-3  
D) 16.3 g.cm-3  
E) 2.71 g.cm-3  
A) 3.87 g.cm-3  
B) 5.54 g.cm-3  
C) 7.92 g.cm-3  
D) 16.3 g.cm-3  
E) 2.71 g.cm-3

Question 6

How many tetrahedral and octahedral holes per atom are there in a cubic close-packed structure,respectively?

Accepted Answer

A) 2 and 1 
B) 0 and 1 
C) 2 and 2 
D) 2 and 0 
E) 0 and 2 
A) 2 and 1 
B) 0 and 1 
C) 2 and 2 
D) 2 and 0 
E) 0 and 2

Question 7

The density of sodium metal is 0.97 g.cm-3.Sodium crystallizes in a body-centered cubic structure; estimate the atomic radius.

Accepted Answer

A) 95 pm 
B) 320 pm 
C) 370 pm 
D) 65 pm 
E) 190 pm 
A) 95 pm 
B) 320 pm 
C) 370 pm 
D) 65 pm 
E) 190 pm

Question 8

How many titanium and oxygen ions are there in the rutile unit cell shown below?

Accepted Answer

A) 3 Ti4+ and 4 O2- 
B) 3 Ti4+ and 6 O2- 
C) 2 Ti4+ and 4 O2- 
D) 2 Ti4+ and 3 O2- 
E) 2 Ti4+ and 6 O2- 
A) 3 Ti4+ and 4 O2- 
B) 3 Ti4+ and 6 O2- 
C) 2 Ti4+ and 4 O2- 
D) 2 Ti4+ and 3 O2- 
E) 2 Ti4+ and 6 O2-

Question 9

If the interaction between two species is proportional to 1/r2,which of the following is likely involved?

Accepted Answer

A) Chloromethane molecules in the liquid phase 
B) Na+ and H2O 
C) Bromine molecules in the liquid phase 
D) Chloromethane molecules in the gas phase 
E) Ions in an ionic solid 
A) Chloromethane molecules in the liquid phase 
B) Na+ and H2O 
C) Bromine molecules in the liquid phase 
D) Chloromethane molecules in the gas phase 
E) Ions in an ionic solid

Question 10

The coordination numbers in cubic close-packed,body-centered cubic,and primitive cubic structures are,respectively,

Accepted Answer

A) 12,8,and 12. 
B) 12,8,and 4. 
C) 8,12,and 6. 
D) 12,6,and 6. 
E) 12,8,and 6. 
A) 12,8,and 12. 
B) 12,8,and 4. 
C) 8,12,and 6. 
D) 12,6,and 6. 
E) 12,8,and 6.

Question 11

How many tetrahedral holes are there in a face-centered cubic unit cell?

Accepted Answer

A) 8 
B) 12 
C) 1 
D) 4 
E) 6 
A) 8 
B) 12 
C) 1 
D) 4 
E) 6

Question 12

What are the coordination numbers of calcium and titanium,respectively,in perovskite? The unit cell is shown below.

Accepted Answer

A) 6 and 6 
B) 12 and 6 
C) 12 and 8 
D) 12 and 12 
E) 6 and 8 
A) 6 and 6 
B) 12 and 6 
C) 12 and 8 
D) 12 and 12 
E) 6 and 8

Question 13

Molecular solids are held together by weak intermolecular forces.True or false?

Accepted Answer

A) True 
 B)False

Question 14

Which of the following compounds is likely to adopt the cesium chloride structure?

Accepted Answer

A) AgCl,ρ = 0.62 
B) MgO,ρ = 0.51 
C) CaO,ρ = 0.71 
D) RbI,ρ = 0.68 
E) TlCl,ρ = 0.90 
A) AgCl,ρ = 0.62 
B) MgO,ρ = 0.51 
C) CaO,ρ = 0.71 
D) RbI,ρ = 0.68 
E) TlCl,ρ = 0.90

Question 15

Which of the following molecular solids has the highest melting point?

Accepted Answer

A) Sucrose,C12H22O11  
B) Carbon dioxide,CO2  
C) H2O 
D) TiCl4  
E) Benzene,C6H6  
A) Sucrose,C12H22O11  
B) Carbon dioxide,CO2  
C) H2O 
D) TiCl4  
E) Benzene,C6H6

Question 16

A certain liquid has a meniscus that curves downward in glass.This means that the cohesive forces in the liquid are less than the forces between the liquid and the glass.True or false?

Accepted Answer

A) True 
 B)False

Question 17

When the cations and anions of an ionic compound have very different radii,the compound usually adopts the rock-salt structure.True or false?

Accepted Answer

A) True 
 B)False

Question 18

What is the coordination number of rubidium in RbF? The ionic radii of Rb+ and F- are 149 and 133 pm,respectively.

Accepted Answer

A) 2 
B) 4 
C) 8 
D) 6 
E) 12 
A) 2 
B) 4 
C) 8 
D) 6 
E) 12

Question 19

How many atoms are there in a primitive cubic unit cell?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 8 
E) 4 
A) 1 
B) 2 
C) 3 
D) 8 
E) 4

Question 20

If a cubic unit cell of an ionic compound has A cations at the corners and the face centers and X anions in the centers of the edges,what is the empirical formula of the compound?

Accepted Answer

A) AX 
B) A4X3 
C) AX2 
D) A2X3 
E) A2X 
A) AX 
B) A4X3 
C) AX2 
D) A2X3 
E) A2X

A new material will be recognized as a metal if

Glycerol,C₃H₈O₃,has a higher viscosity than propanol,C₃H₈O.True or false?

The ability of water to "wet" paper is due to hydrogen bonding between water molecules and surface molecules in the paper.True or false?

Butane and 2-propanone have approximately the same boiling points.True or false?

The atomic radius of aluminum is 143 pm.Estimate its density,given that the metal has a close-packed structure.

How many tetrahedral and octahedral holes per atom are there in a cubic close-packed structure,respectively?

The density of sodium metal is 0.97 g.cm^-³.Sodium crystallizes in a body-centered cubic structure; estimate the atomic radius.

How many titanium and oxygen ions are there in the rutile unit cell shown below?

If the interaction between two species is proportional to 1/r²,which of the following is likely involved?

The coordination numbers in cubic close-packed,body-centered cubic,and primitive cubic structures are,respectively,

How many tetrahedral holes are there in a face-centered cubic unit cell?

What are the coordination numbers of calcium and titanium,respectively,in perovskite? The unit cell is shown below.

Molecular solids are held together by weak intermolecular forces.True or false?

Which of the following compounds is likely to adopt the cesium chloride structure?

Which of the following molecular solids has the highest melting point?

A certain liquid has a meniscus that curves downward in glass.This means that the cohesive forces in the liquid are less than the forces between the liquid and the glass.True or false?

When the cations and anions of an ionic compound have very different radii,the compound usually adopts the rock-salt structure.True or false?

What is the coordination number of rubidium in RbF? The ionic radii of Rb⁺ and F^- are 149 and 133 pm,respectively.

How many atoms are there in a primitive cubic unit cell?

If a cubic unit cell of an ionic compound has A cations at the corners and the face centers and X anions in the centers of the edges,what is the empirical formula of the compound?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Inorganic Materials

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 6: Liquids and Solids

A new material will be recognized as a metal if

Glycerol,C3H8O3,has a higher viscosity than propanol,C3H8O.True or false?

The ability of water to "wet" paper is due to hydrogen bonding between water molecules and surface molecules in the paper.True or false?

Butane and 2-propanone have approximately the same boiling points.True or false?

The atomic radius of aluminum is 143 pm.Estimate its density,given that the metal has a close-packed structure.

How many tetrahedral and octahedral holes per atom are there in a cubic close-packed structure,respectively?

The density of sodium metal is 0.97 g.cm-3.Sodium crystallizes in a body-centered cubic structure; estimate the atomic radius.

How many titanium and oxygen ions are there in the rutile unit cell shown below?

If the interaction between two species is proportional to 1/r2,which of the following is likely involved?

The coordination numbers in cubic close-packed,body-centered cubic,and primitive cubic structures are,respectively,

How many tetrahedral holes are there in a face-centered cubic unit cell?

What are the coordination numbers of calcium and titanium,respectively,in perovskite? The unit cell is shown below.

Molecular solids are held together by weak intermolecular forces.True or false?

Which of the following compounds is likely to adopt the cesium chloride structure?

Which of the following molecular solids has the highest melting point?

A certain liquid has a meniscus that curves downward in glass.This means that the cohesive forces in the liquid are less than the forces between the liquid and the glass.True or false?

When the cations and anions of an ionic compound have very different radii,the compound usually adopts the rock-salt structure.True or false?

What is the coordination number of rubidium in RbF? The ionic radii of Rb+ and F- are 149 and 133 pm,respectively.

How many atoms are there in a primitive cubic unit cell?

If a cubic unit cell of an ionic compound has A cations at the corners and the face centers and X anions in the centers of the edges,what is the empirical formula of the compound?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Inorganic Materials

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

Glycerol,C₃H₈O₃,has a higher viscosity than propanol,C₃H₈O.True or false?

The density of sodium metal is 0.97 g.cm^-³.Sodium crystallizes in a body-centered cubic structure; estimate the atomic radius.

If the interaction between two species is proportional to 1/r²,which of the following is likely involved?

What is the coordination number of rubidium in RbF? The ionic radii of Rb⁺ and F^- are 149 and 133 pm,respectively.