Question 1

Liquids can be easily compressed.

Accepted Answer

A) True 
 B)False  False

Question 2

The ability of sodium chloride to mix with water is most likely due to:

Accepted Answer

A) dispersion force 
B) ion-dipole force 
C) dipole-dipole force 
D) hydrogen bonding 
E) none of the above 
A) dispersion force 
B) ion-dipole force 
C) dipole-dipole force 
D) hydrogen bonding 
E) none of the above B

Question 3

Ice is an example of a molecular solid.

Accepted Answer

A) True 
 B)False  True

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Sublimation is the process of a liquid being converted directly to a gas.

Accepted Answer

A) True 
 B)False

Question 6

Heat is released when a liquid freezes into a solid.

Accepted Answer

A) True 
 B)False

Question 7

If we supply additional heat to a solid in equilibrium with its liquid at the melting point,the thermal energy added is used to:

Accepted Answer

A) overcome the intermolecular forces that hold the solid together. 
B) expand the solid. 
C) change the liquid back to solid. 
D) change solid to liquid. 
E) raise the temperature of the solid above its melting point. 
A) overcome the intermolecular forces that hold the solid together. 
B) expand the solid. 
C) change the liquid back to solid. 
D) change solid to liquid. 
E) raise the temperature of the solid above its melting point.

Question 8

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

Question 9

Rank the compounds NH3,CH4,and PH3 in order of increasing boiling point.

Accepted Answer

A) NH3 43 
B) CH43 3 
C) NH3 34 
D) CH4 3 3 
E) PH33 4 
A) NH3 43 
B) CH43 3 
C) NH3 34 
D) CH4 3 3 
E) PH33 4

Question 10

Which substance would be expected to have the highest boiling point?

Accepted Answer

A) N2 
B) O2 
C) CO2 
D) CO 
E) not enough information 
A) N2 
B) O2 
C) CO2 
D) CO 
E) not enough information

Question 11

Evaporation is an endothermic process.

Accepted Answer

A) True 
 B)False

Question 12

Increasing the temperature increases the vaporization rate of a liquid because the excess energy is used to break covalent bonds.

Accepted Answer

A) True 
 B)False

Question 13

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 14

Evaporation is:

Accepted Answer

A) increased by increasing temperature. 
B) an endothermic process. 
C) the opposite process to condensation. 
D) a cooling process for humans when they sweat. 
E) all of the above 
A) increased by increasing temperature. 
B) an endothermic process. 
C) the opposite process to condensation. 
D) a cooling process for humans when they sweat. 
E) all of the above

Question 15

Which of the following statements is false?

Accepted Answer

A) Evaporation is an endothermic process. 
B) A puddle of water cools down as it evaporates. 
C) As a liquid is converted into a gas,the liquid absorbs heat. 
D) All of the above are true. 
E) None of the above are true. 
A) Evaporation is an endothermic process. 
B) A puddle of water cools down as it evaporates. 
C) As a liquid is converted into a gas,the liquid absorbs heat. 
D) All of the above are true. 
E) None of the above are true.

Question 16

Water has unusual physical properties which enable life to exist on earth.

Accepted Answer

A) True 
 B)False

Question 17

How many kJ of heat are needed to completely melt 1.70 moles of  
O,given that the water is at its melting point? The heat of fusion for water is

Accepted Answer

A) 30.6 
B) 10.2 
C) 3.54 
D) 63.7 
E) none of the above 
A) 30.6 
B) 10.2 
C) 3.54 
D) 63.7 
E) none of the above

Question 18

The measure of the resistance to the flow of a liquid is called:

Accepted Answer

A) vapor pressure. 
B) sublimation. 
C) viscosity. 
D) condensation. 
E) none of the above 
A) vapor pressure. 
B) sublimation. 
C) viscosity. 
D) condensation. 
E) none of the above

Question 19

Viscosity increases with increased intermolecular force because the molecules attract each other strongly which hinders the flow.

Accepted Answer

A) True 
 B)False

Question 20

The reason for many of the unique properties of water is:

Accepted Answer

A) dispersion forces. 
B) the ability to form hydrogen bonds. 
C) high surface tension and low volatility. 
D) moderate viscosity and expanding upon freezing. 
E) all of the above 
A) dispersion forces. 
B) the ability to form hydrogen bonds. 
C) high surface tension and low volatility. 
D) moderate viscosity and expanding upon freezing. 
E) all of the above

Liquids can be easily compressed.

The ability of sodium chloride to mix with water is most likely due to:

Ice is an example of a molecular solid.

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

Sublimation is the process of a liquid being converted directly to a gas.

Heat is released when a liquid freezes into a solid.

If we supply additional heat to a solid in equilibrium with its liquid at the melting point,the thermal energy added is used to:

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

Rank the compounds NH₃,CH₄,and PH₃ in order of increasing boiling point.

Which substance would be expected to have the highest boiling point?

Evaporation is an endothermic process.

Increasing the temperature increases the vaporization rate of a liquid because the excess energy is used to break covalent bonds.

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

Evaporation is:

Which of the following statements is false?

Water has unusual physical properties which enable life to exist on earth.

How many kJ of heat are needed to completely melt 1.70 moles of O,given that the water is at its melting point? The heat of fusion for water is

The measure of the resistance to the flow of a liquid is called:

Viscosity increases with increased intermolecular force because the molecules attract each other strongly which hinders the flow.

The reason for many of the unique properties of water is:

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

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Exam 12: Liquids,solids,and Intermolecular Forces

Liquids can be easily compressed.

The ability of sodium chloride to mix with water is most likely due to:

Ice is an example of a molecular solid.

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

Sublimation is the process of a liquid being converted directly to a gas.

Heat is released when a liquid freezes into a solid.

If we supply additional heat to a solid in equilibrium with its liquid at the melting point,the thermal energy added is used to:

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

Rank the compounds NH3,CH4,and PH3 in order of increasing boiling point.

Which substance would be expected to have the highest boiling point?

Evaporation is an endothermic process.

Increasing the temperature increases the vaporization rate of a liquid because the excess energy is used to break covalent bonds.

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

Evaporation is:

Which of the following statements is false?

Water has unusual physical properties which enable life to exist on earth.

How many kJ of heat are needed to completely melt 1.70 moles of O,given that the water is at its melting point? The heat of fusion for water is

The measure of the resistance to the flow of a liquid is called:

Viscosity increases with increased intermolecular force because the molecules attract each other strongly which hinders the flow.

The reason for many of the unique properties of water is:

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

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

Rank the compounds NH₃,CH₄,and PH₃ in order of increasing boiling point.