Question 1

Which substance has the highest melting point?

Accepted Answer

A)  Mg
B)  C5H12
C)  Kr
D)  SiO2 (silica) 
E)  Cl2

Question 2

Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first.

Accepted Answer

A)  H2O, H2S
B)  CH3CH2OH, CH3OH
C)  CH3COCH3, CH3CH2CH2OH
D)  NH3, PH3
E)  Br2, Cl2

Question 3

Which of the following substances is most likely to be a gas at room temperature and atmospheric pressure?

Accepted Answer

A)  I2
B)  Pb
C)  Ar
D)  CCl4
E)  C8H18

Question 4

Which substance has the highest melting point?

Accepted Answer

A)  Mn
B)  C8H18
C)  Ar
D)  C (diamond) 
E)  Br2 D

Question 5

The physical properties of a substance influenced by the strength of intermolecular forces include all of the following except

Accepted Answer

A)  density.
B)  boiling point.
C)  surface tension.
D)  melting point.
E)  mass.

Question 6

Explain how a pressure cooker works by filling in the blanks in the following statement: A pressure cooker allows the pressure inside the cooker to become ________ than atmospheric pressure, which ________ the boiling point of the water used to cook the food, thus cooking the food ________.

Accepted Answer

A pressure cooker allows the pressure in...

Question 7

What phase transition is occurring between points B and C on the cooling curve?

Accepted Answer

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

Question 8

The forces that hold graphite, C(s) , together in the solid state are

Accepted Answer

A)  ionic bonds.
B)  dipole-dipole forces.
C)  London dispersion forces only.
D)  covalent bonds and London dispersion forces.
E)  attractions between nuclei and delocalized valence electrons.

Question 9

Which of the following has the highest boiling point?

Accepted Answer

A)  H2
B)  H2O
C)  H2S
D)  H2Se
E)  H2Te

Question 10

Which of the following statements is correct?

Accepted Answer

A)  At the melting point of a substance, the solid, liquid, and gas phases are all in equilibrium.
B)  The freezing point and the melting point of a substance are the same.
C)  There is no fundamental difference in the melting process for covalent substances and ionic substances.
D)  In order for a substance to go from the gas phase to the liquid phase, it must absorb energy from the surroundings.
E)  In order for a substance to go from the liquid phase to the gas phase, it must give off energy to the surroundings.

Question 11

Which of the molecules in the figure has hydrogen bonding in the pure liquid state?

Accepted Answer

A)  I only
B)  II only
C)  III only
D)  II and III
E)  I and II C

Question 12

The physical properties of a substance influenced by the strength of intermolecular forces include all of the following except

Accepted Answer

A)  melting point.
B)  boiling point.
C)  viscosity.
D)  vapor pressure.
E)  mass. E

Question 13

Calculate the amount of heat energy required to convert 27.5 g of water at 62.5°C to steam at 124.0°C. (Cwater = 4.184 J/g°C; Cice = 2.03 J/gºC; Csteam = 2.02 J/g°C; molar heat of fusion of ice = 6.01 × 103 J/mol; molar heat of vaporization of liquid water = 4.07 × 104 J/mol)

Accepted Answer

A)  6.15 × 104 kJ
B)  1.23 × 102 kJ
C)  4.31 × 102 kJ
D)  67.8 kJ
E)  1.33 kJ

Question 14

Identify the type of solid shown in the image.

Accepted Answer

A)  metallic
B)  ionic
C)  network
D)  nonpolar molecular
E)  polar molecular

Question 15

A solid substance has a high melting point, is hard, brittle, and conducts electricity when molten. This substance is probably a(n) ________ solid.

Accepted Answer

A)  metallic
B)  ionic
C)  network
D)  nonpolar molecular
E)  polar molecular

Question 16

Which of the following substances is most likely to be a gas at room temperature and atmospheric pressure?

Accepted Answer

A)  Cs
B)  SO2
C)  I2
D)  CCl4
E)  Ni

Question 17

What is the boiling point in °C of acetone at 1.2 atm?

Accepted Answer

The answer of What is the boiling point in °C...

Question 18

HCl boils at -85°C and F2 boils at -188°C. Which type of intermolecular force is responsible for the higher boiling point of HCl?

Accepted Answer

The higher boiling point of HCl (hydroch...

Question 19

The atmospheric pressure on Mount Everest is about 0.30 atm. From the vapor pressure curve of propane, it can be seen the boiling point of propane at this elevation is about ________.

Accepted Answer

A)  −137ºC
B)  −120ºC
C)  −67ºC
D)  −42ºC
E)  0ºC

Question 20

Calculate the amount of heat energy required to evaporate 27.5 g of water at 100.0ºC. (molar heat of vaporization of liquid water = 4.07 × 104 J/mol)

Accepted Answer

A)  62.1 kJ
B)  1.12 × 103 kJ
C)  2.02 × 104 kJ
D)  6.20 × 107 kJ
E)  1.22 × 10−2 kJ

Exam 10: The Liquid and Solid States

Which substance has the highest melting point?

Correct AnswerverifiedShow Answer

Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first.

Correct AnswerverifiedShow Answer

Which of the following substances is most likely to be a gas at room temperature and atmospheric pressure?

Correct AnswerverifiedShow Answer

Which substance has the highest melting point?

Correct AnswerverifiedD

The physical properties of a substance influenced by the strength of intermolecular forces include all of the following except

Correct AnswerverifiedShow Answer

Explain how a pressure cooker works by filling in the blanks in the following statement: A pressure cooker allows the pressure inside the cooker to become ________ than atmospheric pressure, which ________ the boiling point of the water used to cook the food, thus cooking the food ________.

Correct AnswerAnswered by ExamLex AIA pressure cooker allows the pressure in...View AnswerShow Answer

What phase transition is occurring between points B and C on the cooling curve?

Correct AnswerverifiedShow Answer

The forces that hold graphite, C(s) , together in the solid state are

Correct AnswerverifiedShow Answer

Which of the following has the highest boiling point?

Correct AnswerverifiedShow Answer

Which of the following statements is correct?

Correct AnswerverifiedShow Answer

Which of the molecules in the figure has hydrogen bonding in the pure liquid state?

Correct AnswerverifiedC

The physical properties of a substance influenced by the strength of intermolecular forces include all of the following except

Correct AnswerverifiedE

Calculate the amount of heat energy required to convert 27.5 g of water at 62.5°C to steam at 124.0°C. (Cwater = 4.184 J/g°C; Cice = 2.03 J/gºC; Csteam = 2.02 J/g°C; molar heat of fusion of ice = 6.01 × 103 J/mol; molar heat of vaporization of liquid water = 4.07 × 104 J/mol)

Correct AnswerverifiedShow Answer

Identify the type of solid shown in the image.

Correct AnswerverifiedShow Answer

A solid substance has a high melting point, is hard, brittle, and conducts electricity when molten. This substance is probably a(n) ________ solid.

Correct AnswerverifiedShow Answer

Which of the following substances is most likely to be a gas at room temperature and atmospheric pressure?

Correct AnswerverifiedShow Answer

What is the boiling point in °C of acetone at 1.2 atm?

Correct AnswerverifiedShow Answer

HCl boils at -85°C and F2 boils at -188°C. Which type of intermolecular force is responsible for the higher boiling point of HCl?

Correct AnswerAnswered by ExamLex AIThe higher boiling point of HCl (hydroch...View AnswerShow Answer

The atmospheric pressure on Mount Everest is about 0.30 atm. From the vapor pressure curve of propane, it can be seen the boiling point of propane at this elevation is about ________.

Correct AnswerverifiedShow Answer

Calculate the amount of heat energy required to evaporate 27.5 g of water at 100.0ºC. (molar heat of vaporization of liquid water = 4.07 × 104 J/mol)

Correct AnswerverifiedShow Answer

Correct Answer
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D

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Explain how a pressure cooker works by filling in the blanks in the following statement: A pressure cooker allows the pressure inside the cooker to become than atmospheric pressure, which the boiling point of the water used to cook the food, thus cooking the food .

Correct Answer
Answered by ExamLex AI
A pressure cooker allows the pressure in...
View Answer

Correct Answer
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C

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E

Calculate the amount of heat energy required to convert 27.5 g of water at 62.5°C to steam at 124.0°C. (C_water = 4.184 J/g°C; C_ice = 2.03 J/gºC; C_steam = 2.02 J/g°C; molar heat of fusion of ice = 6.01 × 103 J/mol; molar heat of vaporization of liquid water = 4.07 × 10⁴ J/mol)

Correct Answer
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HCl boils at -85°C and F₂ boils at -188°C. Which type of intermolecular force is responsible for the higher boiling point of HCl?

Correct Answer
Answered by ExamLex AI
The higher boiling point of HCl (hydroch...
View Answer

Correct Answer
verified

Calculate the amount of heat energy required to evaporate 27.5 g of water at 100.0ºC. (molar heat of vaporization of liquid water = 4.07 × 10⁴ J/mol)

Correct Answer
verified