Question 1

A cubic close-packed structure has

Accepted Answer

A)  A coordination number of 4. 
B)  A coordination number of 6. 
C)  The same density as a hexagonal close-packed structure. 
D)  Twice the density of a hexagonal close-packed structure. 
E)  A coordination number of 8. 
A)  A coordination number of 4. 
B)  A coordination number of 6. 
C)  The same density as a hexagonal close-packed structure. 
D)  Twice the density of a hexagonal close-packed structure. 
E)  A coordination number of 8.

Question 2

For which of the following gases would you expect Z, the compression factor,
To be greater than one at low pressures?

Accepted Answer

A)  hydrogen 
B)  methane 
C)  ethane 
D)  All gases have Z less than 1 at low pressure. 
A)  hydrogen 
B)  methane 
C)  ethane 
D)  All gases have Z less than 1 at low pressure.

Question 3

Ceramics are not brittle.

Accepted Answer

A) True 
 B)False

Question 4

A sample of a gas weighing 15.1 g occupies 2.25 L at 1.75 atm and 20.0$\omicron $C .
If the empirical formula of the gas is NO2, What is the molecular formula?

Accepted Answer

A)  N5O10  
B)  N3O6  
C)  NO2  
D)  N4O8  
E)  N2O4  
A)  N5O10  
B)  N3O6  
C)  NO2  
D)  N4O8  
E)  N2O4

Question 5

The mass of a face-centered cubic unit cell is

Accepted Answer

A)  Two times the mass of one atom. 
B)  Five times the mass of one atom. 
C)  Equal to the mass of one atom. 
D)  Six times the mass of one atom. 
E)  Four times the mass of one atom. 
A)  Two times the mass of one atom. 
B)  Five times the mass of one atom. 
C)  Equal to the mass of one atom. 
D)  Six times the mass of one atom. 
E)  Four times the mass of one atom.

Question 6

Which of the following is the strongest intermolecular force between molecules?

Accepted Answer

A)  Dipole-dipole (stationary) 
B)  Hydrogen bonding 
C)  Dipole-dipole (rotating) 
D)  London 
E)  Ion-dipole 
A)  Dipole-dipole (stationary) 
B)  Hydrogen bonding 
C)  Dipole-dipole (rotating) 
D)  London 
E)  Ion-dipole

Question 7

What is the end result of the sol-gel process?

Accepted Answer

A)  A silicon-based molecular solid. 
B)  A silicon rich ionic structure. 
C)  Corundum based polymers. 
D)  A silicon oxide network structure. 
E)  A limestone based network solid. 
A)  A silicon-based molecular solid. 
B)  A silicon rich ionic structure. 
C)  Corundum based polymers. 
D)  A silicon oxide network structure. 
E)  A limestone based network solid.

Question 8

The following experiment was carried out using a newly synthesized chlorofluorocarbon .Exactly 50 mL of the gas effused through a porous barrier in 157 s.The same volume of argon effused in 76 s under the same conditions.Which compound is the chlorofluorocarbon?

Accepted Answer

A)  C2Cl4F2  
B)  C2ClF5  
C)  C2Cl2F4  
D)  C2Cl5F 
E)  C2Cl3F3  
A)  C2Cl4F2  
B)  C2ClF5  
C)  C2Cl2F4  
D)  C2Cl5F 
E)  C2Cl3F3

Question 9

If the ratio of the radius of the cation to the anion in a 1:1 compound is 0.800,

Accepted Answer

A)  The compound adopts the rock-salt structure. 
B)  The coordination number of the cation and anion are 6 and 6. 
C)  The compound adopts the same structure as calcium fluorite. 
D)  Each cation occupies one-half of the tetrahedral holes of each anion cube. 
E)  Each cation occupies all the cubic holes in the center of each anion cube. 
A)  The compound adopts the rock-salt structure. 
B)  The coordination number of the cation and anion are 6 and 6. 
C)  The compound adopts the same structure as calcium fluorite. 
D)  Each cation occupies one-half of the tetrahedral holes of each anion cube. 
E)  Each cation occupies all the cubic holes in the center of each anion cube.

Question 10

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 11

Consider the following reaction:
4NaO2(s)+ 2CO2(g)$\rightarrow$2Na2CO3(s)+ 3O2(g) 
How many moles of NaO2 are needed to react with 75.0 L of carbon dioxide at STP?

Accepted Answer

A)  0.15 
B)  1.67 
C)  3.35 
D)  6.70 
E)  13.4 
A)  0.15 
B)  1.67 
C)  3.35 
D)  6.70 
E)  13.4

Question 12

Oxygen can be produced in the laboratory by the reaction:
2KClOS1U1B13S1U1B0(s)$\rightarrow$ 2KCl(s)+ 3OS1U1B12S1U1B0(g)
How many moles of potassium chlorate are needed to produce 257 mL of oxygen, Collected over water at 14S1U1P1$\omicron $S1S1P0C and 97.6 kPa? The vapor pressure of water at 14S1U1P1$\omicron $S1S1P0C is
1.60 kPa.

Accepted Answer

A)  6.89 *10S1U1P1-S1S1P0S1U1P13 S1S1P0 
B)  7.00 *10S1U1P1-S1S1P0S1U1P13 S1S1P0 
C)  7.12 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0 
D)  2.06 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0 
E)  1.55 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0 
A)  6.89 *10S1U1P1-S1S1P0S1U1P13 S1S1P0 
B)  7.00 *10S1U1P1-S1S1P0S1U1P13 S1S1P0 
C)  7.12 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0 
D)  2.06 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0 
E)  1.55 * 10S1U1P1-S1S1P0S1U1P13 S1S1P0

Question 13

From what do silicates derive their strength?

Accepted Answer

A)  Their covalently bonded network structures. 
B)  Strong intermolecular forces. 
C)  Their extensive pi-delocalized systems. 
D)  From two-dimensional covalent bonding. 
E)  Nothing, silicates are not generally considered strong. 
A)  Their covalently bonded network structures. 
B)  Strong intermolecular forces. 
C)  Their extensive pi-delocalized systems. 
D)  From two-dimensional covalent bonding. 
E)  Nothing, silicates are not generally considered strong.

Question 14

Which of the following can form intermolecular hydrogen bonds?

Accepted Answer

A)  PH3  
B)  HI 
C)  CH3CH2CH2CH2CH3  
D)  HCOOH 
E)  CH3CH2OCH2CH3  
A)  PH3  
B)  HI 
C)  CH3CH2CH2CH2CH3  
D)  HCOOH 
E)  CH3CH2OCH2CH3

Question 15

What are clays?

Accepted Answer

A)  Aluminosilicates.  
B)  Types of cement.  
C)  Types of concrete.  
D)  Limestone.  
E)  Portland cement.  
A)  Aluminosilicates.  
B)  Types of cement.  
C)  Types of concrete.  
D)  Limestone.  
E)  Portland cement.

Question 16

If the interaction between two species is proportional to 1/r3, which of the following is likely involved?

Accepted Answer

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

Question 17

If the radius of an atom is r, what is the length of the side of the body-centered cubic unit cell?

Accepted Answer

A)  4r/3½ 
B)  2.25r 
C)  r 
D)  2r 
E)  8½r 
A)  4r/3½ 
B)  2.25r 
C)  r 
D)  2r 
E)  8½r

Question 18

Which of the following gases will have the largest root mean square speed at 100S1U1P1$\circ$S1S1P0C?

Accepted Answer

A)  water 
B)  argon 
C)  methane 
D)  nitrogen 
E)  oxygen 
A)  water 
B)  argon 
C)  methane 
D)  nitrogen 
E)  oxygen

Question 19

A metal with a cubic close-packed structure is malleable because

Accepted Answer

A)  Each atom has 2 tetrahedral holes. 
B)  Each atom has a coordination number of 12. 
C)  The unit cell has 8 sets of slip planes. 
D)  The unit cell has a large percentage of empty space. 
E)  Each atom has 1 octahedral hole. 
A)  Each atom has 2 tetrahedral holes. 
B)  Each atom has a coordination number of 12. 
C)  The unit cell has 8 sets of slip planes. 
D)  The unit cell has a large percentage of empty space. 
E)  Each atom has 1 octahedral hole.

Question 20

Resistance in a material is defined as:

Accepted Answer

A)  R = $\kappa$S1U1P1.S1S1P0AS1U1P12S1S1P0 / lS1U1P1 S1S1P0 
B)  R = $\kappa$S1U1P1.S1S1P0A / l 
C)  R = $\kappa$S1U1P1.S1S1P0l / A 
D)  R = $\kappa$S1U1P1.S1S1P0A / lS1U1P12S1S1P0 
E)  R = $\kappa$S1U1P12S1S1P0S1U1P1.S1S1P0A / l 
A)  R = $\kappa$S1U1P1.S1S1P0AS1U1P12S1S1P0 / lS1U1P1 S1S1P0 
B)  R = $\kappa$S1U1P1.S1S1P0A / l 
C)  R = $\kappa$S1U1P1.S1S1P0l / A 
D)  R = $\kappa$S1U1P1.S1S1P0A / lS1U1P12S1S1P0 
E)  R = $\kappa$S1U1P12S1S1P0S1U1P1.S1S1P0A / l

A cubic close-packed structure has

For which of the following gases would you expect Z, the compression factor, To be greater than one at low pressures?

Ceramics are not brittle.

A sample of a gas weighing 15.1 g occupies 2.25 L at 1.75 atm and 20.0^$\omicron$C . If the empirical formula of the gas is NO₂, What is the molecular formula?

The mass of a face-centered cubic unit cell is

Which of the following is the strongest intermolecular force between molecules?

What is the end result of the sol-gel process?

The following experiment was carried out using a newly synthesized chlorofluorocarbon .Exactly 50 mL of the gas effused through a porous barrier in 157 s.The same volume of argon effused in 76 s under the same conditions.Which compound is the chlorofluorocarbon?

If the ratio of the radius of the cation to the anion in a 1:1 compound is 0.800,

A new material will be recognized as a metal if

Consider the following reaction: 4NaO₂(s)+ 2CO₂(g) $\rightarrow$ 2Na₂CO₃(s)+ 3O₂(g) How many moles of NaO₂ are needed to react with 75.0 L of carbon dioxide at STP?

Oxygen can be produced in the laboratory by the reaction: 2KClO₃(s) $\rightarrow$ 2KCl(s)+ 3O₂(g) How many moles of potassium chlorate are needed to produce 257 mL of oxygen, Collected over water at 14^$\omicron$C and 97.6 kPa? The vapor pressure of water at 14^$\omicron$C is 1.60 kPa.

From what do silicates derive their strength?

Which of the following can form intermolecular hydrogen bonds?

What are clays?

If the interaction between two species is proportional to 1/r³, which of the following is likely involved?

If the radius of an atom is r, what is the length of the side of the body-centered cubic unit cell?

Which of the following gases will have the largest root mean square speed at 100^$\circ$C?

A metal with a cubic close-packed structure is malleable because

Resistance in a material is defined as:

Atoms

Molecules

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Exam 3: States of Matter

A cubic close-packed structure has

For which of the following gases would you expect Z, the compression factor, To be greater than one at low pressures?

Ceramics are not brittle.

A sample of a gas weighing 15.1 g occupies 2.25 L at 1.75 atm and 20.0 ο\omicron ο C . If the empirical formula of the gas is NO2, What is the molecular formula?

The mass of a face-centered cubic unit cell is

Which of the following is the strongest intermolecular force between molecules?

What is the end result of the sol-gel process?

The following experiment was carried out using a newly synthesized chlorofluorocarbon .Exactly 50 mL of the gas effused through a porous barrier in 157 s.The same volume of argon effused in 76 s under the same conditions.Which compound is the chlorofluorocarbon?

If the ratio of the radius of the cation to the anion in a 1:1 compound is 0.800,

A new material will be recognized as a metal if

Consider the following reaction: 4NaO2(s)+ 2CO2(g) →\rightarrow→ 2Na2CO3(s)+ 3O2(g) How many moles of NaO2 are needed to react with 75.0 L of carbon dioxide at STP?

Oxygen can be produced in the laboratory by the reaction: 2KClO3(s) →\rightarrow→ 2KCl(s)+ 3O2(g) How many moles of potassium chlorate are needed to produce 257 mL of oxygen, Collected over water at 14 ο\omicron ο C and 97.6 kPa? The vapor pressure of water at 14 ο\omicron ο C is 1.60 kPa.

From what do silicates derive their strength?

Which of the following can form intermolecular hydrogen bonds?

What are clays?

If the interaction between two species is proportional to 1/r3, which of the following is likely involved?

If the radius of an atom is r, what is the length of the side of the body-centered cubic unit cell?

Which of the following gases will have the largest root mean square speed at 100 ∘\circ∘ C?

A metal with a cubic close-packed structure is malleable because

Resistance in a material is defined as:

Atoms

Molecules

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

A sample of a gas weighing 15.1 g occupies 2.25 L at 1.75 atm and 20.0^$\omicron$C . If the empirical formula of the gas is NO₂, What is the molecular formula?

Consider the following reaction: 4NaO₂(s)+ 2CO₂(g) $\rightarrow$ 2Na₂CO₃(s)+ 3O₂(g) How many moles of NaO₂ are needed to react with 75.0 L of carbon dioxide at STP?

Oxygen can be produced in the laboratory by the reaction: 2KClO₃(s) $\rightarrow$ 2KCl(s)+ 3O₂(g) How many moles of potassium chlorate are needed to produce 257 mL of oxygen, Collected over water at 14^$\omicron$C and 97.6 kPa? The vapor pressure of water at 14^$\omicron$C is 1.60 kPa.

If the interaction between two species is proportional to 1/r³, which of the following is likely involved?

Which of the following gases will have the largest root mean square speed at 100^$\circ$C?