Question 1

In the rock-salt structure (NaCl),the cations occupy all the octahedral holes.True or false?

Accepted Answer

A) True 
 B)False

Question 2

What are the coordination numbers of Ti4+ and O2F1F1F1S1F1F1F10,respectively,in rutile? The unit cell is shown below.

Accepted Answer

A) 4 and 3 
B) 6 and 4 
C) 3 and 6 
D) 6 and 6 
E) 6 and 3 
A) 4 and 3 
B) 6 and 4 
C) 3 and 6 
D) 6 and 6 
E) 6 and 3

Question 3

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

Question 4

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 5

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.

Question 6

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 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
B) 5.54 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103 
C) 7.92 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
D) 16.3 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
E) 2.71 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
A) 3.87 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
B) 5.54 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103 
C) 7.92 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
D) 16.3 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103  
E) 2.71 gF1F1F1S1F1F1F10cmF1F1F1S1F1F1F103

Question 7

Which of the following can form intermolecular hydrogen bonds?

Accepted Answer

A) CH3CH2CH2CH2CH3  
B) CH3CH2C(O)H 
C) CH3CH2C(O)CH3  
D) CH3CH2NH2  
E) CH3CH2OCH2CH3  
A) CH3CH2CH2CH2CH3  
B) CH3CH2C(O)H 
C) CH3CH2C(O)CH3  
D) CH3CH2NH2  
E) CH3CH2OCH2CH3

Question 8

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 9

Order the following cubic unit cells from highest percentage of empty space to lowest: body-centered,primitive,face-centered.

Accepted Answer

A) primitive > body-centered > face-centered 
B) body-centered > primitive > face-centered 
C) primitive > face-centered > body-centered 
D) body-centered > face-centered >primitive 
E) face-centered > body centered > primitive 
A) primitive > body-centered > face-centered 
B) body-centered > primitive > face-centered 
C) primitive > face-centered > body-centered 
D) body-centered > face-centered >primitive 
E) face-centered > body centered > primitive

Question 10

Match each statement with the intermolecular force mainly responsible for the phenomenon.
1.Helium can be liquefied. (a)dipole-dipole
2.Sodium salts are commonly hydrated. (b)hydrogen bonding
3.The boiling point of cis-dichloroethene
is higher than that of trans-dichloroethene. (c)London dispersion
4.NH3 has a higher boiling point than PH3. (d)ion-dipole

Accepted Answer

1 and (c);

Question 11

Superconductivity is the loss of all electrical resistance when a substance is cooled below a certain characteristic transition temperature.True or false?

Accepted Answer

A) True 
 B)False

Question 12

Which of the following can form intermolecular hydrogen bonds?

Accepted Answer

A) NH2CH2COOH 
B) SiH4 
C) CH3COCH3 
D) H2CO 
E) CH3Cl 
A) NH2CH2COOH 
B) SiH4 
C) CH3COCH3 
D) H2CO 
E) CH3Cl

Question 13

Sodium has a body-centered cubic unit cell.If the atomic radius of sodium is 190 pm,what is the density of sodium?

Accepted Answer

The answer of Sodium has a body-centered cubic unit cell.If...

Question 14

All the following are units of surface tension except

Accepted Answer

A) mJF1F1F1S1F1F1F10mF1F1F1S1F1F1F102.    
B) NF1F1F1S1F1F1F10m. 
C) JF1F1F1S1F1F1F10mF1F1F1S1F1F1F102.  
D) mNF1F1F1S1F1F1F10mF1F1F1S1F1F1F101. 
E) kgF1F1F1S1F1F1F10sF1F1F1S1F1F1F102. 
A) mJF1F1F1S1F1F1F10mF1F1F1S1F1F1F102.    
B) NF1F1F1S1F1F1F10m. 
C) JF1F1F1S1F1F1F10mF1F1F1S1F1F1F102.  
D) mNF1F1F1S1F1F1F10mF1F1F1S1F1F1F101. 
E) kgF1F1F1S1F1F1F10sF1F1F1S1F1F1F102.

Question 15

Which of the following has the highest boiling point?

Accepted Answer

A) CH3CH2CH2CH2CH2Br 
B) CH3CH2CH2CH2CH2I 
C) CH3CH2CH2CH2CH3  
D) CH3CH2CH2CH2CH2F 
E) CH3CH2CH2CH2CH2Cl 
A) CH3CH2CH2CH2CH2Br 
B) CH3CH2CH2CH2CH2I 
C) CH3CH2CH2CH2CH3  
D) CH3CH2CH2CH2CH2F 
E) CH3CH2CH2CH2CH2Cl

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements is true?

Accepted Answer

A) 1,1-Dichloro-2-methyl-1-propene has a higher boiling point than trans-2,3-dichloro-2-butene. 
B) CH4 has a higher boiling point than CCl4. 
C) o-Dichlorobenzene has a lower boiling point than p-dichlorobenzene. 
D) HI has a lower boiling point than HBr. 
E) Butane, C4H10, has a higher boiling point than acetone, CH3COCH3. 
A) 1,1-Dichloro-2-methyl-1-propene has a higher boiling point than trans-2,3-dichloro-2-butene. 
B) CH4 has a higher boiling point than CCl4. 
C) o-Dichlorobenzene has a lower boiling point than p-dichlorobenzene. 
D) HI has a lower boiling point than HBr. 
E) Butane, C4H10, has a higher boiling point than acetone, CH3COCH3.

Question 18

Predict which of the following has the lowest boiling point.

Accepted Answer

A) SbH3  
B) AsH3  
C) NH3  
D) BiH3  
E) PH3  
A) SbH3  
B) AsH3  
C) NH3  
D) BiH3  
E) PH3

Question 19

What are all the intermolecular forces that are responsible for the existence of the molecular solid oxalic acid,H2C2O4?

Accepted Answer

A) Dipole-dipole, London forces, and hydrogen bonding 
B) Dipole-dipole and London forces 
C) Hydrogen bonding and dipole-dipole 
D) London forces 
E) Dipole-dipole and ion-ion 
A) Dipole-dipole, London forces, and hydrogen bonding 
B) Dipole-dipole and London forces 
C) Hydrogen bonding and dipole-dipole 
D) London forces 
E) Dipole-dipole and ion-ion

Question 20

How many calcium,titanium,and oxygen ions are there in the perovskite unit cell shown below?

Accepted Answer

A) 1 Ca2+, 2 Ti4+, and 3 O2F1F1F1S1F1F1F10 
B) 1 Ca2+, 1 Ti4+, and 6 O2F1F1F1S1F1F1F10 
C) 1 Ca2+, 4 Ti4+, and 6 O2F1F1F1S1F1F1F10 
D) 1 Ca2+, 1 Ti4+, and 3 O2F1F1F1S1F1F1F10 
E) 1 Ca2+, 2 Ti4+, and 6 O2F1F1F1S1F1F1F10 
A) 1 Ca2+, 2 Ti4+, and 3 O2F1F1F1S1F1F1F10 
B) 1 Ca2+, 1 Ti4+, and 6 O2F1F1F1S1F1F1F10 
C) 1 Ca2+, 4 Ti4+, and 6 O2F1F1F1S1F1F1F10 
D) 1 Ca2+, 1 Ti4+, and 3 O2F1F1F1S1F1F1F10 
E) 1 Ca2+, 2 Ti4+, and 6 O2F1F1F1S1F1F1F10

In the rock-salt structure (NaCl),the cations occupy all the octahedral holes.True or false?

What are the coordination numbers of Ti⁴⁺ and O²^,respectively,in rutile? The unit cell is shown below.

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?

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

A new material will be recognized as a metal if

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

Which of the following can form intermolecular hydrogen bonds?

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

Order the following cubic unit cells from highest percentage of empty space to lowest: body-centered,primitive,face-centered.

Superconductivity is the loss of all electrical resistance when a substance is cooled below a certain characteristic transition temperature.True or false?

Which of the following can form intermolecular hydrogen bonds?

Sodium has a body-centered cubic unit cell.If the atomic radius of sodium is 190 pm,what is the density of sodium?

All the following are units of surface tension except

Which of the following has the highest boiling point?

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

Which of the following statements is true?

Predict which of the following has the lowest boiling point.

What are all the intermolecular forces that are responsible for the existence of the molecular solid oxalic acid,H₂C₂O₄?

How many calcium,titanium,and oxygen ions are there in the perovskite unit cell shown below?

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

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Exam 6: Liquids and Solids

In the rock-salt structure (NaCl),the cations occupy all the octahedral holes.True or false?

What are the coordination numbers of Ti4+ and O2,respectively,in rutile? The unit cell is shown below.

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?

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

A new material will be recognized as a metal if

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

Which of the following can form intermolecular hydrogen bonds?

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

Order the following cubic unit cells from highest percentage of empty space to lowest: body-centered,primitive,face-centered.

Superconductivity is the loss of all electrical resistance when a substance is cooled below a certain characteristic transition temperature.True or false?

Which of the following can form intermolecular hydrogen bonds?

Sodium has a body-centered cubic unit cell.If the atomic radius of sodium is 190 pm,what is the density of sodium?

All the following are units of surface tension except

Which of the following has the highest boiling point?

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

Which of the following statements is true?

Predict which of the following has the lowest boiling point.

What are all the intermolecular forces that are responsible for the existence of the molecular solid oxalic acid,H2C2O4?

How many calcium,titanium,and oxygen ions are there in the perovskite unit cell shown below?

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

What are the coordination numbers of Ti⁴⁺ and O²^,respectively,in rutile? The unit cell is shown below.

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

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

What are all the intermolecular forces that are responsible for the existence of the molecular solid oxalic acid,H₂C₂O₄?