Question 1

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

Question 2

Which compound in liquid form will have the highest vapor pressure?

Accepted Answer

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

Question 3

Compounds with very high vapor pressures must have very minimal intermolecular forces.

Accepted Answer

A) True 
 B)False

Question 4

Which intermolecular force found in CCl2H2 is the strongest?

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 5

H2 boils at a higher temperature than He because H2 undergoes hydrogen bonding.

Accepted Answer

A) True 
 B)False

Question 6

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 7

Dispersion forces result from the temporary distortion of the electron cloud in an atom or molecule which increases in magnitude with increasing size.

Accepted Answer

A) True 
 B)False

Question 8

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 9

The boiling point is the temperature at which the vapor pressure of a solution is equal to the intermolecular forces.

Accepted Answer

A) True 
 B)False

Question 10

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 11

The shapes of protein molecules are determined by intermolecular forces.

Accepted Answer

A) True 
 B)False

Question 12

Evaporation is:

Accepted Answer

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

Question 13

The rate of vaporization of a liquid can be increased by
1.increasing the surface area
2.increasing the temperature
3.increasing the strength of the intermolecular forces

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 only 
E) 2 and 3 only 
A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 2 only 
E) 2 and 3 only

Question 14

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 15

How much energy does it take to melt a 16.87 g ice cube?
ΔHfus = 6.02 kJ/mol

Accepted Answer

A) 102 kJ 
B) 108 kJ 
C) 936 J 
D) 5.64 kJ 
E) none of the above 
A) 102 kJ 
B) 108 kJ 
C) 936 J 
D) 5.64 kJ 
E) none of the above

Question 16

Which sequence correctly shows the increasing density of the three phases of water?

Accepted Answer

A) solid < liquid < gas 
B) gas < liquid < solid 
C) gas < solid < liquid 
D) liquid < gas < solid 
E) none of the above 
A) solid < liquid < gas 
B) gas < liquid < solid 
C) gas < solid < liquid 
D) liquid < gas < solid 
E) none of the above

Question 17

Intermolecular forces hold atoms and molecules in place in a solid.

Accepted Answer

A) True 
 B)False

Question 18

Which molecule below has hydrogen bonding?

Accepted Answer

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

Question 19

Which intermolecular forces are found in CCl4?

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

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

Accepted Answer

A) True 
 B)False

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

Which compound in liquid form will have the highest vapor pressure?

Compounds with very high vapor pressures must have very minimal intermolecular forces.

Which intermolecular force found in CCl₂H₂ is the strongest?

H₂ boils at a higher temperature than He because H₂ undergoes hydrogen bonding.

Which statement about boiling point is FALSE?

Dispersion forces result from the temporary distortion of the electron cloud in an atom or molecule which increases in magnitude with increasing size.

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

The boiling point is the temperature at which the vapor pressure of a solution is equal to the intermolecular forces.

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

The shapes of protein molecules are determined by intermolecular forces.

Evaporation is:

The rate of vaporization of a liquid can be increased by 1.increasing the surface area 2.increasing the temperature 3.increasing the strength of the intermolecular forces

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

How much energy does it take to melt a 16.87 g ice cube? ΔH_fus = 6.02 kJ/mol

Which sequence correctly shows the increasing density of the three phases of water?

Intermolecular forces hold atoms and molecules in place in a solid.

Which molecule below has hydrogen bonding?

Which intermolecular forces are found in CCl₄?

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

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

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

Which compound in liquid form will have the highest vapor pressure?

Compounds with very high vapor pressures must have very minimal intermolecular forces.

Which intermolecular force found in CCl2H2 is the strongest?

H2 boils at a higher temperature than He because H2 undergoes hydrogen bonding.

Which statement about boiling point is FALSE?

Dispersion forces result from the temporary distortion of the electron cloud in an atom or molecule which increases in magnitude with increasing size.

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

The boiling point is the temperature at which the vapor pressure of a solution is equal to the intermolecular forces.

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

The shapes of protein molecules are determined by intermolecular forces.

Evaporation is:

The rate of vaporization of a liquid can be increased by 1.increasing the surface area 2.increasing the temperature 3.increasing the strength of the intermolecular forces

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

How much energy does it take to melt a 16.87 g ice cube? ΔHfus = 6.02 kJ/mol

Which sequence correctly shows the increasing density of the three phases of water?

Intermolecular forces hold atoms and molecules in place in a solid.

Which molecule below has hydrogen bonding?

Which intermolecular forces are found in CCl4?

For hydrogen bonding to occur,a molecule must have a hydrogen atom bonded directly to a fluorine,oxygen,or nitrogen atom.

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

Which intermolecular force found in CCl₂H₂ is the strongest?

H₂ boils at a higher temperature than He because H₂ undergoes hydrogen bonding.

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

How much energy does it take to melt a 16.87 g ice cube? ΔH_fus = 6.02 kJ/mol

Which intermolecular forces are found in CCl₄?