Question 1

The shapes of protein molecules are determined by intermolecular forces.

Accepted Answer

A) True 
 B)False

Question 2

Consider the three compounds below,then choose the compound(s) that have hydrogen bonding. 
1.H2
2.CH4
3.HF

Accepted Answer

A)  Only compound 1 has hydrogen bonding.
B)  Only compound 2 has hydrogen bonding.
C)  Only compound 3 has hydrogen bonding.
D)  All three of these compounds have hydrogen bonding.
E)  None of these compounds have hydrogen bonding.

Question 3

Substance A is a molecular compound that dissolves in gasoline but not in water.The molecules of A are very likely:

Accepted Answer

A)  metallic.
B)  nonmetallic.
C)  polar.
D)  nonpolar.
E)  none of the above

Question 4

The change of a substance from a liquid to a gaseous form is called:

Accepted Answer

A)  dynamic equilibrium.
B)  heat of fusion.
C)  condensation.
D)  vaporization.
E)  volatile.

Question 5

Ice can float in a glass of liquid water because the solid form of water is more dense than the liquid form.

Accepted Answer

A) True 
 B)False

Question 6

The amount of heat required to melt one mole of a solid is called the:

Accepted Answer

A)  heat of vaporization.
B)  heat of fusion.
C)  heating curve.
D)  cooling curve.
E)  none of the above

Question 7

Hydrogen bonding occurs whenever hydrogen is present.

Accepted Answer

A) True 
 B)False

Question 8

Attraction between the Na+ cation and Cl- anion holds the solid lattice of sodium chloride together.

Accepted Answer

A) True 
 B)False

Question 9

Which substance below is an ionic solid?

Accepted Answer

A)  Cu (s) 
B)  H2O (s) 
C)  MgO (s) 
D)  C6H12O6 (s) 
E)  none of the above

Question 10

When sufficient quantity of heat has been added to reach the boiling point of a solution,what happens to any additional heat added?

Accepted Answer

A)  Additional heat is used to evaporate the liquid as the process is endothermic and requires continued input of energy.
B)  Additional heat raises the temperature of the liquid which in turn increases the rate at which boiling occurs.
C)  Additional heat lowers the intermolecular forces of the liquid which in turn increases the volatility of the liquid.
D)  Additional heat alters the viscosity and the surface tension of the liquid which raises the vapor pressure and increases the boiling point which is why you must continually heat the solution.
E)  None of the above are correct statements. A

Question 11

Which intermolecular force is common to all polar molecules but NOT nonpolar molecules?

Accepted Answer

A)  dispersion forces
B)  dipole-dipole forces
C)  hydrogen bonding
D)  X-forces
E)  none of the above

Question 12

Which compound will have the highest boiling point?

Accepted Answer

A)  CH4
B)  CH3CH3
C)  CH3C(O) CH3
D)   CH3CH2OH
E)  not enough information

Question 13

Which intermolecular forces are found in CO2?

Accepted Answer

A)  dispersion forces
B)  dipole-dipole forces
C)  hydrogen bonding
D)  dispersion forces and dipole-dipole forces
E)  none of the above A

Question 14

Heat is released when a liquid freezes into a solid.

Accepted Answer

A) True 
 B)False

Question 15

Which state of matter has a low density and an indefinite volume?

Accepted Answer

A)  solids
B)  liquids
C)  gases
D)  both solids and liquids
E)  none of the above

Question 16

Ionic solids tend to have higher melting points than molecular solids.

Accepted Answer

A) True 
 B)False  True

Question 17

The opposite process of freezing is:

Accepted Answer

A)  evaporation.
B)  sublimation.
C)  boiling.
D)  condensation.
E)  none of the above

Question 18

Which molecule below has hydrogen bonding?

Accepted Answer

A)  CH4
B)  HCl
C)   H2
D)   CH3CH2OH
E)  all of the above

Question 19

Ice is an example of a molecular solid.

Accepted Answer

A) True 
 B)False

Question 20

Without intermolecular forces,solids and liquids would not exist and all matter would be gaseous.

Accepted Answer

A) True 
 B)False

Exam 12: Liquids, solids, and Intermolecular Forces

The shapes of protein molecules are determined by intermolecular forces.

Correct AnswerverifiedShow Answer

Consider the three compounds below,then choose the compound(s) that have hydrogen bonding. 1.H2 2.CH4 3.HF

Correct AnswerverifiedShow Answer

Substance A is a molecular compound that dissolves in gasoline but not in water.The molecules of A are very likely:

Correct AnswerverifiedShow Answer

The change of a substance from a liquid to a gaseous form is called:

Correct AnswerverifiedShow Answer

Ice can float in a glass of liquid water because the solid form of water is more dense than the liquid form.

Correct AnswerverifiedShow Answer

The amount of heat required to melt one mole of a solid is called the:

Correct AnswerverifiedShow Answer

Hydrogen bonding occurs whenever hydrogen is present.

Correct AnswerverifiedShow Answer

Attraction between the Na+ cation and Cl- anion holds the solid lattice of sodium chloride together.

Correct AnswerverifiedShow Answer

Which substance below is an ionic solid?

Correct AnswerverifiedShow Answer

When sufficient quantity of heat has been added to reach the boiling point of a solution,what happens to any additional heat added?

Correct AnswerverifiedA

Which intermolecular force is common to all polar molecules but NOT nonpolar molecules?

Correct AnswerverifiedShow Answer

Which compound will have the highest boiling point?

Correct AnswerverifiedShow Answer

Which intermolecular forces are found in CO2?

Correct AnswerverifiedA

Heat is released when a liquid freezes into a solid.

Correct AnswerverifiedShow Answer

Which state of matter has a low density and an indefinite volume?

Correct AnswerverifiedShow Answer

Ionic solids tend to have higher melting points than molecular solids.

Correct AnswerverifiedTrue

The opposite process of freezing is:

Correct AnswerverifiedShow Answer

Which molecule below has hydrogen bonding?

Correct AnswerverifiedShow Answer

Ice is an example of a molecular solid.

Correct AnswerverifiedShow Answer

Without intermolecular forces,solids and liquids would not exist and all matter would be gaseous.

Correct AnswerverifiedShow Answer

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Consider the three compounds below,then choose the compound(s) that have hydrogen bonding. 1.H₂ 2.CH₄ 3.HF

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Attraction between the Na⁺ cation and Cl^- anion holds the solid lattice of sodium chloride together.

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A

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Which intermolecular forces are found in CO₂?

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A

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True

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