Question 1

How many joules of heat are needed to completely vaporize  
Of water at its boiling point?
Given  
= 40.6 kJ/mol

Accepted Answer

A) 54.97 
B)    
C) 29.98 
D)    
E) none of the above 
A) 54.97 
B)    
C) 29.98 
D)    
E) none of the above

Question 2

Paradichlorobenzene,a material used in "moth balls," is known to go directly from a solid form to a gaseous form.This process is known as:

Accepted Answer

A) melting 
B) evaporation 
C) condensation 
D) boiling 
E) sublimation 
A) melting 
B) evaporation 
C) condensation 
D) boiling 
E) sublimation

Question 3

Dipole-dipole forces are weaker than dispersion forces.

Accepted Answer

A) True 
 B)False

Question 4

Why is water considered an unusual molecule?

Accepted Answer

A) No molecule of similar size is a liquid at room temperature. 
B) No molecule of similar size has as high a boiling point. 
C) Water can dissolve many polar and ionic compounds. 
D) Water expands upon freezing. 
E) all of the above 
A) No molecule of similar size is a liquid at room temperature. 
B) No molecule of similar size has as high a boiling point. 
C) Water can dissolve many polar and ionic compounds. 
D) Water expands upon freezing. 
E) all of the above

Question 5

What types of forces exist between I2 molecules?

Accepted Answer

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

Question 6

How many grams of  
 
O can be melted by  
3 J?
Given  
=7.27 kJ/mol

Accepted Answer

A) 14.5 
B) 3.64 
C) 20.4 
D) 74.1 
E) none of the above 
A) 14.5 
B) 3.64 
C) 20.4 
D) 74.1 
E) none of the above

Question 7

Which state of matter has a high density and an indefinite shape?

Accepted Answer

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

Question 8

Which state of matter has a high density and a definite volume?

Accepted Answer

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

Question 9

Oil would be considered a nonvolatile liquid while gasoline would be considered volatile.

Accepted Answer

A) True 
 B)False

Question 10

Which statement about boiling point is FALSE?

Accepted Answer

A) The boiling point is higher for compounds with strong intermolecular forces. 
B) The boiling point is higher for compounds with a high viscosity. 
C) The boiling point of a compound is an absolute constant. 
D) The boiling point of a compound is higher for nonvolatile compounds. 
E) All of the above statements are true. 
A) The boiling point is higher for compounds with strong intermolecular forces. 
B) The boiling point is higher for compounds with a high viscosity. 
C) The boiling point of a compound is an absolute constant. 
D) The boiling point of a compound is higher for nonvolatile compounds. 
E) All of the above statements are true.

Question 11

Evaporation is decreased by increasing the intermolecular forces.

Accepted Answer

A) True 
 B)False

Question 12

In northern climates,it is common to have a layer of frost form on cars that have been out overnight in the winter.During the day the frost layer disappears despite the temperature of the ice remaining below freezing.How?

Accepted Answer

A) The frost melts due to the sun heating the surface of the car above the melting point. 
B) The frost evaporates due to the sun heating the solid. 
C) The frost cycles as does the saturation level of moisture in the winter air does from night to day. 
D) The frost sublimes directly from solid ice to water vapor. 
E) none of the above 
A) The frost melts due to the sun heating the surface of the car above the melting point. 
B) The frost evaporates due to the sun heating the solid. 
C) The frost cycles as does the saturation level of moisture in the winter air does from night to day. 
D) The frost sublimes directly from solid ice to water vapor. 
E) none of the above

Question 13

A glass of ice water containing nine ice cubes will be colder than a similar-size glass of ice water containing only three ice cubes.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The process of heating a pot of water from room temperature to boiling temperature is an exothermic process.

Accepted Answer

A) True 
 B)False

Question 16

Which statement below is false?

Accepted Answer

A) A hydrogen bond is the strongest of the intermolecular forces. 
B) A hydrogen atom must be bonded directly to fluorine,oxygen,or nitrogen to exhibit hydrogen bonding. 
C) The large electronegativity difference between hydrogen and an F,O,or N atom is essential for the formation of a hydrogen bond. 
D) A hydrogen bond is only 2-5% the strength of a typical covalent bond. 
E) none of the above 
A) A hydrogen bond is the strongest of the intermolecular forces. 
B) A hydrogen atom must be bonded directly to fluorine,oxygen,or nitrogen to exhibit hydrogen bonding. 
C) The large electronegativity difference between hydrogen and an F,O,or N atom is essential for the formation of a hydrogen bond. 
D) A hydrogen bond is only 2-5% the strength of a typical covalent bond. 
E) none of the above

Question 17

The opposite process of freezing is:

Accepted Answer

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

Question 18

Liquids that have high vapor pressure and low boiling points are called:

Accepted Answer

A) abnormal liquids. 
B) volatile liquids. 
C) non-volatile liquids. 
D) viscous liquids. 
E) none of the above 
A) abnormal liquids. 
B) volatile liquids. 
C) non-volatile liquids. 
D) viscous liquids. 
E) none of the above

Question 19

Which intermolecular force increases with increasing molar mass?

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 20

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

Accepted Answer

A) The process is endothermic and the heat of fusion is positive. 
B) The process is endothermic and the heat of fusion is negative. 
C) The process is exothermic and the heat of fusion is positive. 
D) The process is exothermic and the heat of fusion is negative. 
E) not enough information 
A) The process is endothermic and the heat of fusion is positive. 
B) The process is endothermic and the heat of fusion is negative. 
C) The process is exothermic and the heat of fusion is positive. 
D) The process is exothermic and the heat of fusion is negative. 
E) not enough information

How many joules of heat are needed to completely vaporize Of water at its boiling point? Given = 40.6 kJ/mol

Paradichlorobenzene,a material used in "moth balls," is known to go directly from a solid form to a gaseous form.This process is known as:

Dipole-dipole forces are weaker than dispersion forces.

Why is water considered an unusual molecule?

What types of forces exist between I₂ molecules?

How many grams of O can be melted by ³ J? Given =7.27 kJ/mol

Which state of matter has a high density and an indefinite shape?

Which state of matter has a high density and a definite volume?

Oil would be considered a nonvolatile liquid while gasoline would be considered volatile.

Which statement about boiling point is FALSE?

Evaporation is decreased by increasing the intermolecular forces.

In northern climates,it is common to have a layer of frost form on cars that have been out overnight in the winter.During the day the frost layer disappears despite the temperature of the ice remaining below freezing.How?

A glass of ice water containing nine ice cubes will be colder than a similar-size glass of ice water containing only three ice cubes.

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

The process of heating a pot of water from room temperature to boiling temperature is an exothermic process.

Which statement below is false?

The opposite process of freezing is:

Liquids that have high vapor pressure and low boiling points are called:

Which intermolecular force increases with increasing molar mass?

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

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

Exam 12: Liquids,solids,and Intermolecular Forces

How many joules of heat are needed to completely vaporize Of water at its boiling point? Given = 40.6 kJ/mol

Paradichlorobenzene,a material used in "moth balls," is known to go directly from a solid form to a gaseous form.This process is known as:

Dipole-dipole forces are weaker than dispersion forces.

Why is water considered an unusual molecule?

What types of forces exist between I2 molecules?

How many grams of O can be melted by 3 J? Given =7.27 kJ/mol

Which state of matter has a high density and an indefinite shape?

Which state of matter has a high density and a definite volume?

Oil would be considered a nonvolatile liquid while gasoline would be considered volatile.

Which statement about boiling point is FALSE?

Evaporation is decreased by increasing the intermolecular forces.

In northern climates,it is common to have a layer of frost form on cars that have been out overnight in the winter.During the day the frost layer disappears despite the temperature of the ice remaining below freezing.How?

A glass of ice water containing nine ice cubes will be colder than a similar-size glass of ice water containing only three ice cubes.

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

The process of heating a pot of water from room temperature to boiling temperature is an exothermic process.

Which statement below is false?

The opposite process of freezing is:

Liquids that have high vapor pressure and low boiling points are called:

Which intermolecular force increases with increasing molar mass?

Which statement is TRUE in describing what occurs when a solid melts to a liquid?

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

What types of forces exist between I₂ molecules?

How many grams of O can be melted by ³ J? Given =7.27 kJ/mol