Question 1

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

Accepted Answer

A) True 
 B)False

Question 2

A temperature increase causes __________________ in the conductivity of a conductor.

Accepted Answer

A)  a decrease 
B)  an increase 
C)  an increase or decrease (depending on the conductor) 
D)  a modulation 
E)  no change 
A)  a decrease 
B)  an increase 
C)  an increase or decrease (depending on the conductor) 
D)  a modulation 
E)  no change

Question 3

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Accepted Answer

A)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus. 
B)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a concave meniscus. 
C)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus. 
D)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a concave meniscus. 
E)  None of the above will occur. 
A)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus. 
B)  the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a concave meniscus. 
C)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus. 
D)  the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a concave meniscus. 
E)  None of the above will occur.

Question 4

A 5.00 g sample of water vapor, initially at 155°C is cooled at atmospheric pressure, producing ice at -55°C. Calculate the amount of heat energy lost by the water sample in this process, in kJ. Use the following data: specific heat capacity of ice is 2.09 J/gF1F1F1S1F1F1F10K; specific heat capacity of liquid water is 4.18 J/gF1F1F1S1F1F1F10K; specific heat capacity of water vapor is 1.84 J/gF1F1F1S1F1F1F10K; heat of fusion of ice is 336 J/g; heat of vaporization of water is 2260 J/g.

Accepted Answer

A)  15.6 kJ 
B)  10.2 kJ 
C)  5.4 kJ 
D)  3.2 kJ 
E)  1.6 kJ 
A)  15.6 kJ 
B)  10.2 kJ 
C)  5.4 kJ 
D)  3.2 kJ 
E)  1.6 kJ

Question 5

Which of the following liquids is likely to have the highest surface tension?

Accepted Answer

A)  Br2 
B)  C8H18 
C)  CH3OCH3 
D)  CH3OH 
E)  Pb 
A)  Br2 
B)  C8H18 
C)  CH3OCH3 
D)  CH3OH 
E)  Pb

Question 6

When identical particles pack in a simple cubic lattice, there is/are ____ particle(s) per unit cell.

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  8 
A)  1 
B)  2 
C)  3 
D)  4 
E)  8

Question 7

The meniscus of mercury in a glass capillary tube is convex because of

Accepted Answer

A)  the very high density of mercury as compared with water. 
B)  the low surface tension of mercury. 
C)  the greater attraction of mercury atoms to the glass than to each other. 
D)  the weaker attraction of mercury atoms to the glass than to each other. 
E)  electrostatic repulsion between the glass and the mercury. 
A)  the very high density of mercury as compared with water. 
B)  the low surface tension of mercury. 
C)  the greater attraction of mercury atoms to the glass than to each other. 
D)  the weaker attraction of mercury atoms to the glass than to each other. 
E)  electrostatic repulsion between the glass and the mercury.

Question 8

Ammonia's unusually high melting point is the result of

Accepted Answer

A)  dipole-dipole forces. 
B)  London dispersion forces. 
C)  hydrogen bonding. 
D)  covalent bonding. 
E)  ionic bonding. 
A)  dipole-dipole forces. 
B)  London dispersion forces. 
C)  hydrogen bonding. 
D)  covalent bonding. 
E)  ionic bonding.

Question 9

Smectic liquid crystals are more highly ordered than either nematic or cholesteric liquid crystals.

Accepted Answer

A) True 
 B)False

Question 10

What word best describes the type of liquid crystal represented below?

Accepted Answer

A)  nematic 
B)  cholesteric 
C)  smectic 
D)  isotropic 
E)  elastic 
A)  nematic 
B)  cholesteric 
C)  smectic 
D)  isotropic 
E)  elastic

Question 11

Examine the following phase diagram and identify the feature represented by point B.

Accepted Answer

A)  melting point 
B)  triple point 
C)  critical point 
D)  sublimation point 
E)  boiling point 
A)  melting point 
B)  triple point 
C)  critical point 
D)  sublimation point 
E)  boiling point

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

A temperature increase causes __________________ in the conductivity of a conductor.

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Which of the following liquids is likely to have the highest surface tension?

When identical particles pack in a simple cubic lattice, there is/are ____ particle(s) per unit cell.

The meniscus of mercury in a glass capillary tube is convex because of

Ammonia's unusually high melting point is the result of

Smectic liquid crystals are more highly ordered than either nematic or cholesteric liquid crystals.

What word best describes the type of liquid crystal represented below?

Examine the following phase diagram and identify the feature represented by point B.

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Exam 12: Intermolecular Forces: Liquids, Solids, and Phase Changes

In a transistor, the current through one semiconductor junction controls the current through a neighboring junction.

A temperature increase causes __________________ in the conductivity of a conductor.

When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

Which of the following liquids is likely to have the highest surface tension?

When identical particles pack in a simple cubic lattice, there is/are ____ particle(s) per unit cell.

The meniscus of mercury in a glass capillary tube is convex because of

Ammonia's unusually high melting point is the result of

Smectic liquid crystals are more highly ordered than either nematic or cholesteric liquid crystals.

What word best describes the type of liquid crystal represented below?

Examine the following phase diagram and identify the feature represented by point B.

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters