Question 1

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) sublimation 
A) vaporization 
B) condensation 
C) freezing 
D) melting 
E) sublimation

Question 2

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·°C 
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·°C

Question 3

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

Question 4

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) covalent 
A) atomic 
B) metallic 
C) molecular 
D) ionic 
E) covalent

Question 5

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

Question 6

Which has the highest surface tension at room temperature?

Accepted Answer

A) CH4 
B) CF4 
C) CCl4 
D) CBr4 
E) CI4 
A) CH4 
B) CF4 
C) CCl4 
D) CBr4 
E) CI4

Question 7

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) Cohesion 
A) Surface tension 
B) Capillary action 
C) Viscosity 
D) Adhesion 
E) Cohesion

Question 8

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

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 4 
A) OF2 2 4 
B) CH4 2 2 
C) OF2 4 2 
D) CO2 4 2 
E) CO2 2 4

Question 10

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

Question 11

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 kJ 
A) −1900 kJ 
B) −420 kJ 
C) −99 kJ 
D) −0.42 kJ 
E) −4.2 × 10−6 kJ

Question 12

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) Cr 
A) Cs 
B) C 
C) Pb 
D) S 
E) Cr

Question 13

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

Question 14

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 > CBr4 
A) BeCl2 > CBr4 > BeBr2 
B) BeCl2 > BeBr2 > CBr4 
C) CBr4 > BeBr2 > BeCl2 
D) BeBr2 > BeCl2 > CBr4

Question 15

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 point 
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 point

Question 16

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) H2O 
A) iron 
B) copper 
C) granite 
D) gold 
E) H2O

Question 17

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 kJ 
A) 14.4 J 
B) 176 J 
C) 7.51 kJ 
D) 7.68 kJ 
E) 9.90 kJ

Question 18

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

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) solution 
E) mixture 
A) solid 
B) liquid 
C) gas 
D) solution 
E) mixture

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

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?

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.

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

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.

Which has the highest surface tension at room temperature?

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

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

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

Which substance has the highest vapor pressure at room temperature?

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.

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

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

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

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

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.

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

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

Exam 7: Solids, Liquids, and Phase Changes

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

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?

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.

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

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.

Which has the highest surface tension at room temperature?

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

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

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

Which substance has the highest vapor pressure at room temperature?

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.

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

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

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

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

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.

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

Atoms and Elements

Electrons and the Periodic Table

Compounds and Chemical Bonds

How Chemists Use Numbers

The Mole and Chemical Formulas

Molecular Shape

Gases

Physical Properties of Solutions

Chemical Reactions and Chemical Equations

Using Balanced Chemical Equations

Acids and Bases

Equilibrium

Organic Chemistry

Biochemistry

Nuclear Chemistry

Electrochemistry

Filters

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

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

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