Question 1

Which of the following indicates the existence of strong intermolecular forces of attraction in a liquid?

Accepted Answer

A) a very low critical temperature 
B) a very low boiling point 
C) a very low vapor pressure 
D) a very low viscosity 
E) a very low enthalpy of vaporization 
A) a very low critical temperature 
B) a very low boiling point 
C) a very low vapor pressure 
D) a very low viscosity 
E) a very low enthalpy of vaporization

Question 2

Below is a phase diagram for a substance.   Which line represents the melting-point curve of the substance?

Accepted Answer

A) R-X 
B) S-X 
C) X-Z 
D) S-Z 
E) M-N 
A) R-X 
B) S-X 
C) X-Z 
D) S-Z 
E) M-N

Question 3

Which of the following phase changes are endothermic?

Accepted Answer

A) sublimation 
B) condensation 
C) deposition 
D) liquifaction 
E) crystallization 
A) sublimation 
B) condensation 
C) deposition 
D) liquifaction 
E) crystallization

Question 4

What is the simplest formula of the compound represented by the unit cell provided below?
​

Accepted Answer

A) AB2 
B) AB3 
C) AB 
D) A2B4 
E) A2B6 
A) AB2 
B) AB3 
C) AB 
D) A2B4 
E) A2B6

Question 5

In the accompanying phase diagram,a liquid can be present at combinations of temperature and pressure corresponding to points

Accepted Answer

A) A,C,G,and D. 
B) A,C,D,and F. 
C) A,B,C,and G. 
D) A and C only. 
E) G,C,D,and E. 
A) A,C,G,and D. 
B) A,C,D,and F. 
C) A,B,C,and G. 
D) A and C only. 
E) G,C,D,and E.

Question 6

Which of the following is an ionic solid?

Accepted Answer

A) SiO2(s) 
B) Ne(s) 
C) Na(s) 
D) CsF(s) 
E) CO2(s) 
A) SiO2(s) 
B) Ne(s) 
C) Na(s) 
D) CsF(s) 
E) CO2(s)

Question 7

The triple point of iodine is at 90 torr and 115°C.This means that liquid I2

Accepted Answer

A) cannot have a vapor pressure less than 90 torr. 
B) is more dense than I2(s). 
C) cannot exist at 1 atmosphere pressure. 
D) cannot exist above 115°C. 
E) can exist at pressure of 10 torr. 
A) cannot have a vapor pressure less than 90 torr. 
B) is more dense than I2(s). 
C) cannot exist at 1 atmosphere pressure. 
D) cannot exist above 115°C. 
E) can exist at pressure of 10 torr.

Question 8

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm3.What is the identity of the metal?

Accepted Answer

A) Ca 
B) Sr 
C) Ni 
D) Yb 
E) Cu 
A) Ca 
B) Sr 
C) Ni 
D) Yb 
E) Cu

Question 9

The metal lead,with an atomic radius of 175 pm,crystallizes in a face-centered cubic lattice.What is the density of lead?​

Accepted Answer

A) 5.67​ g/cm3 
B) ​​0.708 g/cm3 
C) ​2.83​ g/cm3 
D) ​1.41​ g/cm3 
E) ​​11.3 g/cm3 
A) 5.67​ g/cm3 
B) ​​0.708 g/cm3 
C) ​2.83​ g/cm3 
D) ​1.41​ g/cm3 
E) ​​11.3 g/cm3

Question 10

The molecules in a sample of solid SO2 are attracted to each other by a combination of

Accepted Answer

A) H-bonding and ionic bonding. 
B) covalent bonding and dipole-dipole interactions. 
C) London forces and H-bonding. 
D) London forces and dipole-dipole interactions. 
E) none of these 
A) H-bonding and ionic bonding. 
B) covalent bonding and dipole-dipole interactions. 
C) London forces and H-bonding. 
D) London forces and dipole-dipole interactions. 
E) none of these

Question 11

Which of the following pure substances has the lowest normal boiling point?

Accepted Answer

A) H2S 
B) NH3 
C) H2O 
D) H2Te 
E) H2Se 
A) H2S 
B) NH3 
C) H2O 
D) H2Te 
E) H2Se

Question 12

Which of the following pure substances has the lowest vapor pressure at 25°C?

Accepted Answer

A) SbH3 
B) NH3 
C) PH3 
D) AsH3 
E) H2O 
A) SbH3 
B) NH3 
C) PH3 
D) AsH3 
E) H2O

Question 13

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 196 pm and the density of the element is 1.55 g/cm3.What is the volume of the unit cell?

Accepted Answer

A) 3.15 × 107 pm3 
B) 6.45 × 109 pm3 
C) 1.7 × 108 pm3 
D) 7.53 × 106 pm3 
E) 1.26 × 108 pm3 
A) 3.15 × 107 pm3 
B) 6.45 × 109 pm3 
C) 1.7 × 108 pm3 
D) 7.53 × 106 pm3 
E) 1.26 × 108 pm3

Question 14

If more ice is added to an ice-water mixture at equilibrium,

Accepted Answer

A) the temperature will increase somewhat. 
B) the vapor pressure of the water will decrease. 
C) the temperature will decrease somewhat. 
D) the vapor pressure of the water will rise. 
E) the vapor pressure of the water will remain constant. 
A) the temperature will increase somewhat. 
B) the vapor pressure of the water will decrease. 
C) the temperature will decrease somewhat. 
D) the vapor pressure of the water will rise. 
E) the vapor pressure of the water will remain constant.

Question 15

Vanadium crystallizes in the body-centered cubic system.If the edge of the unit cell is 309 pm,what is the radius of a vanadium atom in picometers?

Accepted Answer

A) 134 pm 
B) 536 pm 
C) 714 pm 
D) 618 pm 
E) 58 pm 
A) 134 pm 
B) 536 pm 
C) 714 pm 
D) 618 pm 
E) 58 pm

Question 16

Which bonding interaction best describes the strongest intermolecular forces in AlH3?

Accepted Answer

A) dipole-dipole forces 
B) metallic bonding 
C) ionic bonding 
D) London dispersion forces 
E) primarily hydrogen bonding 
A) dipole-dipole forces 
B) metallic bonding 
C) ionic bonding 
D) London dispersion forces 
E) primarily hydrogen bonding

Question 17

The space-filling representation of a crystalline potassium provided below is an example of a _____ unit cell,which contains the equivalent of _____ atom(s)within a single unit cell.
​

Accepted Answer

A) body centered cubic,2 atoms 
B) face centered cubic,4 atoms 
C) simple cubic,1 atom 
D) body centered cubic,4 atoms 
E) face centered cubic,5 atoms 
A) body centered cubic,2 atoms 
B) face centered cubic,4 atoms 
C) simple cubic,1 atom 
D) body centered cubic,4 atoms 
E) face centered cubic,5 atoms

Question 18

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the density of the lithium chloride?

Accepted Answer

A) 1.04 g/cm3 
B) 2.42 g/cm3 
C) 2.08 g/cm3 
D) 3.11g/cm3 
E) 3.82 g/cm3 
A) 1.04 g/cm3 
B) 2.42 g/cm3 
C) 2.08 g/cm3 
D) 3.11g/cm3 
E) 3.82 g/cm3

Question 19

The strongest intermolecular forces between molecules of PH3 are

Accepted Answer

A) hydrogen bonds. 
B) covalent bonds. 
C) ionic bonds. 
D) London forces. 
E) dipole-dipole attractions. 
A) hydrogen bonds. 
B) covalent bonds. 
C) ionic bonds. 
D) London forces. 
E) dipole-dipole attractions.

Question 20

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the radius of the chloride ion?

Accepted Answer

A) 2.23 × 10-8 cm 
B) 1.82 × 10-8 cm 
C) 2.56 × 10-8 cm 
D) 1.29 × 10-8 cm 
E) 2.76 × 10-8 cm 
A) 2.23 × 10-8 cm 
B) 1.82 × 10-8 cm 
C) 2.56 × 10-8 cm 
D) 1.29 × 10-8 cm 
E) 2.76 × 10-8 cm

Exam 11: States of Matter; Liquids and Solids

Which of the following indicates the existence of strong intermolecular forces of attraction in a liquid?

Below is a phase diagram for a substance. Which line represents the melting-point curve of the substance?

Which of the following phase changes are endothermic?

What is the simplest formula of the compound represented by the unit cell provided below? ​

In the accompanying phase diagram,a liquid can be present at combinations of temperature and pressure corresponding to points

Which of the following is an ionic solid?

The triple point of iodine is at 90 torr and 115°C.This means that liquid I2

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm3.What is the identity of the metal?

The metal lead,with an atomic radius of 175 pm,crystallizes in a face-centered cubic lattice.What is the density of lead?​

The molecules in a sample of solid SO2 are attracted to each other by a combination of

Which of the following pure substances has the lowest normal boiling point?

Which of the following pure substances has the lowest vapor pressure at 25°C?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 196 pm and the density of the element is 1.55 g/cm3.What is the volume of the unit cell?

If more ice is added to an ice-water mixture at equilibrium,

Vanadium crystallizes in the body-centered cubic system.If the edge of the unit cell is 309 pm,what is the radius of a vanadium atom in picometers?

Which bonding interaction best describes the strongest intermolecular forces in AlH3?

The space-filling representation of a crystalline potassium provided below is an example of a _____ unit cell,which contains the equivalent of _____ atom(s)within a single unit cell. ​

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the density of the lithium chloride?

The strongest intermolecular forces between molecules of PH3 are

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the radius of the chloride ion?

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Quantum Theory of the Atom

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Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

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Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

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Chemistry of the Main-Group Metals

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Filters

What is the simplest formula of the compound represented by the unit cell provided below?

The triple point of iodine is at 90 torr and 115°C.This means that liquid I₂

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm³.What is the identity of the metal?

The metal lead,with an atomic radius of 175 pm,crystallizes in a face-centered cubic lattice.What is the density of lead?

The molecules in a sample of solid SO₂ are attracted to each other by a combination of

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 196 pm and the density of the element is 1.55 g/cm³.What is the volume of the unit cell?

Which bonding interaction best describes the strongest intermolecular forces in AlH₃?

The space-filling representation of a crystalline potassium provided below is an example of a _ unit cell,which contains the equivalent of _ atom(s)within a single unit cell.

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10^-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the density of the lithium chloride?

The strongest intermolecular forces between molecules of PH₃ are

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10^-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.What is the radius of the chloride ion?