Question 1

If liquid bromine is cooled to form a solid, which type of solid does it form?

Accepted Answer

A)  atomic
B)  metallic
C)  molecular
D)  ionic
E)  covalentF) A) and B)
G) A) and C)

Question 2

What is q if 28.6 g of water is heated from 22.0°C to 78.3°C? The specific heat of water is 4.184 J/g·°C.

Accepted Answer

A)  2.60 J
B)  2.63 kJ
C)  6.74 kJ
D)  9.37 kJ
E)  3.94×104 kJF) A) and E)
G) A) and D)

Question 3

Place the substances in order of decreasing boiling point. BeCl2 CBr4 BeBr2

Accepted Answer

A)  BeCl2 > CBr4 > BeBr2
B)  BeCl2 > BeBr2 > CBr4
C)  CBr4 > BeBr2 > BeCl2
D)  BeBr2 > BeCl2 > CBr4E) A) and B)
F) All of the above

Question 4

A piece of copper with a mass of 218 g has a heat capacity of 83.9 J/°C.What is the specific heat of copper?

Accepted Answer

A)  0.385 J/g·°C
B)  1.83 × 104 J/g·°C
C)  2.60 J/g·°C
D)  1.32 J/g·°C
E)  24.5 J/g·°CF) B) and E)
G) B) and D)

Question 5

For the solid forms of the following elements, which one is most likely to be of the molecular type?

Accepted Answer

A)  Cs
B)  C
C)  Pb
D)  S
E)  CrF) A) and B)
G) B) and D)

Question 6

Which of the following terms refers to the resistance of a liquid to flow?

Accepted Answer

A)  Surface tension
B)  Capillary action
C)  Viscosity
D)  Adhesion
E)  CohesionF) B) and E)
G) A) and B)

Question 7

Place the substances in order of increasing melting point. CH4
C3H8
C2H4

Accepted Answer

A)  C3H8 2H4 4
B)  C2H4 4 3H8
C)  C3H8 4 2H4
D)  CH4 2H4 3H8
E)  C2H4 3H8 4F) A) and B)
G) A) and C)

Question 8

What is the process in which molecules undergo a phase change directly from the solid phase to the gas phase?

Accepted Answer

A)  deposition
B)  sublimation
C)  freezing
D)  condensation
E)  meltingF) A) and D)
G) A) and E)

Question 9

Place the substances in order of increasing melting point. CO2 CH4 OF2

Accepted Answer

A)  OF2 2 4
B)  CH4 2 2
C)  OF2 4 2
D)  CO2 4 2
E)  CO2 2 4F) B) and C)
G) A) and E)

Question 10

Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Accepted Answer

A)  a low heat of vaporization
B)  a low critical temperature
C)  a low vapor pressure
D)  a low boiling point
E)  a low melting pointF) B) and D)
G) A) and E)

Question 11

Which has the highest surface tension at room temperature?

Accepted Answer

A)  CH4
B)  CF4
C)  CCl4
D)  CBr4
E)  CI4F) A) and E)
G) A) and D)

Question 12

Which state of matter is described as having a definite shape and volume?

Accepted Answer

A)  solid
B)  liquid
C)  gas
D)  solution
E)  mixtureF) A) and C)
G) B) and C)

Question 13

What is the change in temperature if a 25.0-g block of aluminum absorbs 10.0 kJ of heat? The specific heat of aluminum is 0.900 J/g·°C.

Accepted Answer

A)  0.44°C
B)  22.5°C
C)  225°C
D)  360°C
E)  444°CF) D) and E)
G) A) and E)

Question 14

What is the process in which molecules undergo a phase change from the gas phase to the liquid phase?

Accepted Answer

A)  vaporization
B)  condensation
C)  freezing
D)  melting
E)  sublimationF) A) and B)
G) A) and C)

Question 15

How much heat is required to raise the temperature of 22.8 g of copper from 20.0°C to 875.0°C? The specific heat of copper is 0.385 J/g·°C.

Accepted Answer

A)  14.4 J
B)  176 J
C)  7.51 kJ
D)  7.68 kJ
E)  9.90 kJF) None of the above
G) A) and E)

Question 16

Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42 J/g·°C.Calculate q when 3.65 kg of ethylene glycol is cooled from 132°C to 85°C.

Accepted Answer

A)  −1900 kJ
B)  −420 kJ
C)  −99 kJ
D)  −0.42 kJ
E)  −4.2 × 10−6 kJF) None of the above
G) All of the above

Question 17

If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied stove to it, which of the following 15-pound objects, each heated to 100°C, would be the best choice? The specific heat capacity (in J/g·°C)  for each substance is given in parentheses.Iron (0.450) , copper (0.387) , granite (0.79) , gold (0.129) , water (4.184) .

Accepted Answer

A)  iron
B)  copper
C)  granite
D)  gold
E)  H2OF) C) and D)
G) A) and E)

Question 18

Which substance has the highest vapor pressure at room temperature?

Accepted Answer

A)  HF
B)  HCl
C)  HBr
D)  HI
E)  All of these substances have the same vapor pressure at room temperature.F) A) and B)
G) B) and D)

Exam 7: Solids, Liquids, and Phase Changes

Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42 J/g·°C.Calculate q when 3.65 kg of ethylene glycol is cooled from 132°C to 85°C.

Correct Answer
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What is the process in which molecules undergo a phase change directly from the solid phase to the gas phase?

Correct Answer
verified

Which of the following terms refers to the resistance of a liquid to flow?

Correct Answer
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A piece of copper with a mass of 218 g has a heat capacity of 83.9 J/°C.What is the specific heat of copper?

Correct Answer
verified

How much heat is required to raise the temperature of 22.8 g of copper from 20.0°C to 875.0°C? The specific heat of copper is 0.385 J/g·°C.

Correct Answer
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If liquid bromine is cooled to form a solid, which type of solid does it form?

Correct Answer
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What is q if 28.6 g of water is heated from 22.0°C to 78.3°C? The specific heat of water is 4.184 J/g·°C.

Correct Answer
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Place the substances in order of increasing melting point. CH₄ C₃H₈ C₂H₄

Correct Answer
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Which state of matter is described as having a definite shape and volume?

Correct Answer
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Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Correct Answer
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Place the substances in order of increasing melting point. CO₂ CH₄ OF₂

Correct Answer
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Which substance has the highest vapor pressure at room temperature?

Correct Answer
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For the solid forms of the following elements, which one is most likely to be of the molecular type?

Correct Answer
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Which has the highest surface tension at room temperature?

Correct Answer
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Place the substances in order of decreasing boiling point. BeCl₂ CBr₄ BeBr₂

Correct Answer
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Correct Answer
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What is the change in temperature if a 25.0-g block of aluminum absorbs 10.0 kJ of heat? The specific heat of aluminum is 0.900 J/g·°C.

Correct Answer
verified

What is the process in which molecules undergo a phase change from the gas phase to the liquid phase?

Correct Answer
verified

Exam 7: Solids, Liquids, and Phase Changes

Ethylene glycol, used as a coolant in automotive engines, has a specific heat capacity of 2.42 J/g·°C.Calculate q when 3.65 kg of ethylene glycol is cooled from 132°C to 85°C.

Correct AnswerverifiedShow Answer

What is the process in which molecules undergo a phase change directly from the solid phase to the gas phase?

Correct AnswerverifiedShow Answer

Which of the following terms refers to the resistance of a liquid to flow?

Correct AnswerverifiedShow Answer

A piece of copper with a mass of 218 g has a heat capacity of 83.9 J/°C.What is the specific heat of copper?

Correct AnswerverifiedShow Answer

How much heat is required to raise the temperature of 22.8 g of copper from 20.0°C to 875.0°C? The specific heat of copper is 0.385 J/g·°C.

Correct AnswerverifiedShow Answer

If liquid bromine is cooled to form a solid, which type of solid does it form?

Correct AnswerverifiedShow Answer

What is q if 28.6 g of water is heated from 22.0°C to 78.3°C? The specific heat of water is 4.184 J/g·°C.

Correct AnswerverifiedShow Answer

Place the substances in order of increasing melting point. CH4 C3H8 C2H4

Correct AnswerverifiedShow Answer

Which state of matter is described as having a definite shape and volume?

Correct AnswerverifiedShow Answer

Which of the following properties indicates the presence of strong intermolecular forces in a liquid?

Correct AnswerverifiedShow Answer

Place the substances in order of increasing melting point. CO2 CH4 OF2

Correct AnswerverifiedShow Answer

Which substance has the highest vapor pressure at room temperature?

Correct AnswerverifiedShow Answer

For the solid forms of the following elements, which one is most likely to be of the molecular type?

Correct AnswerverifiedShow Answer

Which has the highest surface tension at room temperature?

Correct AnswerverifiedShow Answer

Place the substances in order of decreasing boiling point. BeCl2 CBr4 BeBr2

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is the change in temperature if a 25.0-g block of aluminum absorbs 10.0 kJ of heat? The specific heat of aluminum is 0.900 J/g·°C.

Correct AnswerverifiedShow Answer

What is the process in which molecules undergo a phase change from the gas phase to the liquid phase?

Correct AnswerverifiedShow Answer

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Correct Answer
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Place the substances in order of increasing melting point. CH₄ C₃H₈ C₂H₄

Correct Answer
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Correct Answer
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Place the substances in order of increasing melting point. CO₂ CH₄ OF₂

Correct Answer
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Place the substances in order of decreasing boiling point. BeCl₂ CBr₄ BeBr₂

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Correct Answer
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