Question 1

Which of the compounds below is not an example of a molecular solid?

Accepted Answer

A)  I2(s) 
B)  SiO2(s) 
C)  CO2(s) 
D)  H2O(s) 
E)  C25H52(s) 
A)  I2(s) 
B)  SiO2(s) 
C)  CO2(s) 
D)  H2O(s) 
E)  C25H52(s)

Question 2

In what type of unit cell are the "A" atoms arranged in the given unit cell? 2

Accepted Answer

A)  primitive cubic 
B)  body-centered cubic 
C)  face-centered cubic 
A)  primitive cubic 
B)  body-centered cubic 
C)  face-centered cubic

Question 3

The space-filling representation provided below is an example of a _____ unit cell,which contains _____ atom(s).

Accepted Answer

A)  face centered cubic,4 atoms 
B)  primitive cubic,1 atom 
C)  body centered cubic,2 atoms 
D)  face centered cubic,13 atoms 
E)  primitive cubic,7 atoms 
A)  face centered cubic,4 atoms 
B)  primitive cubic,1 atom 
C)  body centered cubic,2 atoms 
D)  face centered cubic,13 atoms 
E)  primitive cubic,7 atoms

Question 4

A metal crystallizes in a face-centered cubic lattice.The atomic radius of the metal is 198 pm and the density of the metal is 6.57 g/cm3.What is the volume of the unit cell?

Accepted Answer

A)  3.25 × 107 pm3 
B)  1.52 × 109 pm3 
C)  1.76 × 108 pm3 
D)  7.76 × 106 pm3 
E)  1.3 × 108 pm3 
A)  3.25 × 107 pm3 
B)  1.52 × 109 pm3 
C)  1.76 × 108 pm3 
D)  7.76 × 106 pm3 
E)  1.3 × 108 pm3

Question 5

Given the accompanying phase diagram,under what conditions will liquid be found in equilibrium with either solid or gas?

Accepted Answer

A)  Anywhere along curve AB 
B)  Anywhere along curve AC 
C)  Anywhere along curve AD 
D)  Anywhere along curve AB and AC 
E)  Anywhere along curve AB and AD 
A)  Anywhere along curve AB 
B)  Anywhere along curve AC 
C)  Anywhere along curve AD 
D)  Anywhere along curve AB and AC 
E)  Anywhere along curve AB and AD

Question 6

An unknown white solid was found to have a melting point of 150oC.It is soluble in water,but it is a poor conductor of electricity in an aqueous solution.The white solid most likely is _____.

Accepted Answer

A)  C6H12O6 (glucose) 
B)  KCl 
C)  Rb 
D)  C (diamond) 
E)  Si 
A)  C6H12O6 (glucose) 
B)  KCl 
C)  Rb 
D)  C (diamond) 
E)  Si

Question 7

Palladium crystallizes in a face-centered cubic lattice with an edge length of 388.8 pm.What is the density of palladium?

Accepted Answer

A)  0.752 g/cm3 
B)  3.01 g/cm3 
C)  1.50 g/cm3 
D)  6.01 g/cm3 
E)  12.0 g/cm3 
A)  0.752 g/cm3 
B)  3.01 g/cm3 
C)  1.50 g/cm3 
D)  6.01 g/cm3 
E)  12.0 g/cm3

Question 8

Chromium (atomic mass 52.00 g/mol)crystallizes in a body-centered cubic unit cell.If the length of an edge of the unit cell is 289 pm,what is the density (in g/cm3)of chromium?

Accepted Answer

A)  3.58 g/cm3 
B)  7.15 g/cm3 
C)  13.7 g/cm3 
D)  14.3 g/cm3 
E)  21.3 g/cm3 
A)  3.58 g/cm3 
B)  7.15 g/cm3 
C)  13.7 g/cm3 
D)  14.3 g/cm3 
E)  21.3 g/cm3

Question 9

Which one of the following elements is a semiconductor?

Accepted Answer

A)  Li 
B)  Fe 
C)  Cl 
D)  Ni 
E)  Si 
A)  Li 
B)  Fe 
C)  Cl 
D)  Ni 
E)  Si

Question 10

Silver chloride adopts the sodium chloride (rock salt)structure.The length of a unit cell edge is 555 pm.What is the density of AgCl?

Accepted Answer

A)  5.57 g/cm3 
B)  4.19 g/cm3 
C)  2.79 g/cm3 
D)  2.10 g/cm3 
E)  1.39 g/cm3 
A)  5.57 g/cm3 
B)  4.19 g/cm3 
C)  2.79 g/cm3 
D)  2.10 g/cm3 
E)  1.39 g/cm3

Question 11

The energy of formation of one mole of solid crystalline ionic compound when ions in the gas phase combine is referred to as _____.

Accepted Answer

A)  lattice energy 
B)  degenerate energy 
C)  ionization energy 
D)  dissociation energy 
E)  elastic energy 
A)  lattice energy 
B)  degenerate energy 
C)  ionization energy 
D)  dissociation energy 
E)  elastic energy

Question 12

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm3.What is the identity of the metal?

Accepted Answer

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

Question 13

If a metal crystallizes in a body-centered cubic lattice,each metal atom has _____ "nearest neighbors."

Accepted Answer

A)  3 
B)  4 
C)  6 
D)  8 
E)  12 
A)  3 
B)  4 
C)  6 
D)  8 
E)  12

Question 14

What is the distance,in atomic radii,along any edge of a body-centered cubic unit cell?

Accepted Answer

A)    
B)  2 × r 
C)  4 × r 
D)    
E)  r 
A)    
B)  2 × r 
C)  4 × r 
D)    
E)  r

Question 15

Iron(II)sulfide has a primitive cubic unit cell with sulfide ions at the lattice points.The ionic radii of iron(II)ions and sulfide ions are 88 pm and 184 pm,respectively.What is the density of FeS (in g/cm3)?

Accepted Answer

A)  2.56 g/cm3 
B)  4.71 g/cm3 
C)  5.25 g/cm3 
D)  6.66 g/cm3 
E)  8.97 g/cm3 
A)  2.56 g/cm3 
B)  4.71 g/cm3 
C)  5.25 g/cm3 
D)  6.66 g/cm3 
E)  8.97 g/cm3

Question 16

Which two of the following materials are most likely to be amorphous solids: ice,nylon,glass,potassium nitrate?

Accepted Answer

A)  water and glass 
B)  nylon and aspirin 
C)  water and nylon 
D)  water and aspirin 
E)  nylon and glass 
A)  water and glass 
B)  nylon and aspirin 
C)  water and nylon 
D)  water and aspirin 
E)  nylon and glass

Question 17

The metal vanadium crystallizes in a body-centered cubic lattice.If the density of vanadium is 6.11 g/cm3,what is the unit cell volume?

Accepted Answer

A)  5.44 × 105 pm3 
B)  1.99 × 105 pm3 
C)  2.77 × 107 pm3 
D)  1.38 × 107 pm3 
E)  3.98 × 105 pm3 
A)  5.44 × 105 pm3 
B)  1.99 × 105 pm3 
C)  2.77 × 107 pm3 
D)  1.38 × 107 pm3 
E)  3.98 × 105 pm3

Question 18

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

Accepted Answer

A)  AB 
B)  AB2 
C)  AB3 
D)  A2B3 
E)  A2B4 
A)  AB 
B)  AB2 
C)  AB3 
D)  A2B3 
E)  A2B4

Question 19

According to the below phase diagram,what process occurs if a pure substance begins at point C and the pressure on the substance is increased until point B is reached?

Accepted Answer

A)  Fusion 
B)  Vaporization 
C)  Condensation 
D)  Sublimation 
E)  None of these 
A)  Fusion 
B)  Vaporization 
C)  Condensation 
D)  Sublimation 
E)  None of these

Question 20

Copper crystallizes in a face-centered cubic lattice.The radius of a copper atom is 128 pm.What is the edge length of the unit cell?

Accepted Answer

A)  362 pm 
B)  256 pm 
C)  512 pm 
D)  272 pm 
E)  128 pm 
A)  362 pm 
B)  256 pm 
C)  512 pm 
D)  272 pm 
E)  128 pm

Exam 13: The Solid State

Which of the compounds below is not an example of a molecular solid?

In what type of unit cell are the "A" atoms arranged in the given unit cell? 2

The space-filling representation provided below is an example of a _____ unit cell,which contains _____ atom(s).

A metal crystallizes in a face-centered cubic lattice.The atomic radius of the metal is 198 pm and the density of the metal is 6.57 g/cm3.What is the volume of the unit cell?

Given the accompanying phase diagram,under what conditions will liquid be found in equilibrium with either solid or gas?

An unknown white solid was found to have a melting point of 150oC.It is soluble in water,but it is a poor conductor of electricity in an aqueous solution.The white solid most likely is _____.

Palladium crystallizes in a face-centered cubic lattice with an edge length of 388.8 pm.What is the density of palladium?

Chromium (atomic mass 52.00 g/mol)crystallizes in a body-centered cubic unit cell.If the length of an edge of the unit cell is 289 pm,what is the density (in g/cm3)of chromium?

Which one of the following elements is a semiconductor?

Silver chloride adopts the sodium chloride (rock salt)structure.The length of a unit cell edge is 555 pm.What is the density of AgCl?

The energy of formation of one mole of solid crystalline ionic compound when ions in the gas phase combine is referred to as _____.

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm3.What is the identity of the metal?

If a metal crystallizes in a body-centered cubic lattice,each metal atom has _____ "nearest neighbors."

What is the distance,in atomic radii,along any edge of a body-centered cubic unit cell?

Iron(II)sulfide has a primitive cubic unit cell with sulfide ions at the lattice points.The ionic radii of iron(II)ions and sulfide ions are 88 pm and 184 pm,respectively.What is the density of FeS (in g/cm3)?

Which two of the following materials are most likely to be amorphous solids: ice,nylon,glass,potassium nitrate?

The metal vanadium crystallizes in a body-centered cubic lattice.If the density of vanadium is 6.11 g/cm3,what is the unit cell volume?

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

According to the below phase diagram,what process occurs if a pure substance begins at point C and the pressure on the substance is increased until point B is reached?

Copper crystallizes in a face-centered cubic lattice.The radius of a copper atom is 128 pm.What is the edge length of the unit cell?

Basic Concepts of Chemistry

Lets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

The space-filling representation provided below is an example of a _ unit cell,which contains _ atom(s).

A metal crystallizes in a face-centered cubic lattice.The atomic radius of the metal is 198 pm and the density of the metal is 6.57 g/cm³.What is the volume of the unit cell?

Chromium (atomic mass 52.00 g/mol)crystallizes in a body-centered cubic unit cell.If the length of an edge of the unit cell is 289 pm,what is the density (in g/cm³)of chromium?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm³.What is the identity of the metal?

Iron(II)sulfide has a primitive cubic unit cell with sulfide ions at the lattice points.The ionic radii of iron(II)ions and sulfide ions are 88 pm and 184 pm,respectively.What is the density of FeS (in g/cm³)?

The metal vanadium crystallizes in a body-centered cubic lattice.If the density of vanadium is 6.11 g/cm³,what is the unit cell volume?