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Clicker Questions

Chapter 11

Barbara Mowery

York College

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Which combination of kinetic energy (KE) and intermolecular forces (IF) results in formation of a solid?

a. KE much less than IF

b. KE much greater than IF

c. KE and IF comparable, and very large

d. KE and IF comparable, and very small

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Which combination of kinetic energy (KE) and intermolecular forces (IF) results in formation of a solid?

a. KE much less than IF

b. KE much greater than IF

c. KE and IF comparable, and very large

d. KE and IF comparable, and very small

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Which force below is the strongest intermolecular attractive force?

a. Hydrogen bonding

b. Ion-dipole forces

c. Dipole-dipole forces

d. London dispersion forces

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Which force below is the strongest intermolecular attractive force?

a. Hydrogen bonding

b. Ion-dipole forces

c. Dipole-dipole forces

d. London dispersion forces

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Which force below increases in strength as the molecular weight of the compound increases?

a. Hydrogen bonding

b. Ion-dipole forces

c. Dipole-dipole forces

d. London dispersion forces

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Which force below increases in strength as the molecular weight of the compound increases?

a. Hydrogen bonding

b. Ion-dipole forces

c. Dipole-dipole forces

d. London dispersion forces

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Which compound below is not capable of forming hydrogen bonds?

a. CH4

b. NH3

c. H2O

d. HF

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Which compound below is not capable of forming hydrogen bonds?

a. CH4

b. NH3

c. H2O

d. HF

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Which property is not affected by intermolecular forces?

a. boiling point

b. color

c. melting point

d. viscosity

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Which property is not affected by intermolecular forces?

a. boiling point

b. color

c. melting point

d. viscosity

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The ease of changing the charge distribution in a molecule is called its ___.

a. conductivity

b. solubility

c. polarizability

d. viscosity

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The ease of changing the charge distribution in a molecule is called its ___.

a. conductivity

b. solubility

c. polarizability

d. viscosity

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Which compound below has the highest boiling point?

a. H2O

b. H2S

c. H2Se

d. H2Te

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Which compound below has the highest boiling point?

a. H2O

b. H2S

c. H2Se

d. H2Te

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Which element below has the highest boiling point?

a. Kr

b. F2

c. Cl2d. Br2

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Which element below has the highest boiling point?

a. Kr

b. F2

c. Cl2d. Br2

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Which substance below has a greater density in its liquid state than in its solid state?

a. iron

b. glass

c. water

d. carbon dioxide

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Which substance below has a greater density in its liquid state than in its solid state?

a. iron

b. glass

c. water

d. carbon dioxide

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The resistance of a liquid to flow is called the _______ of the liquid.

a. density

b. viscosity

c. potential energy

d. flow rate

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The resistance of a liquid to flow is called the _______ of the liquid.

a. density

b. viscosity

c. potential energy

d. flow rate

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The energy required to convert a liquid to a vapor is called the _______ of the liquid.

a. boiling point

b. freezing point

c. heat of vaporization

d. heat of fusion

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The energy required to convert a liquid to a vapor is called the _______ of the liquid.

a. boiling point

b. freezing point

c. heat of vaporization

d. heat of fusion

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Isopropyl alcohol feels cool on the skin because it has an (X) heat of (Y).

a. X = exothermic, Y = vaporization

b. X = endothermic, Y = vaporization

c. X = exothermic, Y = fusion

d. X = endothermic, Y = fusion

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Isopropyl alcohol feels cool on the skin because it has an (X) heat of (Y).

a. X = exothermic, Y = vaporization

b. X = endothermic, Y = vaporization

c. X = exothermic, Y = fusion

d. X = endothermic, Y = fusion

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When heat is added to ice at zero degrees Celsius, what will happen?

a. The temperature will increase.

b. The temperature will decrease.

c. The temperature will not change.

d. A supercritical fluid will form.

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When heat is added to ice at zero degrees Celsius, what will happen?

a. The temperature will increase.

b. The temperature will decrease.

c. The temperature will not change.

d. A supercritical fluid will form.

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The highest temperature at which a substance can exist in its liquid state is called its _______ point.

a. boiling

b. freezing

c. triple

d. critical

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The highest temperature at which a substance can exist in its liquid state is called its _______ point.

a. boiling

b. freezing

c. triple

d. critical

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The temperature and pressure at which all three phases exist simultaneously is called the _______ point of a substance.

a. boiling

b. freezing

c. triple

d. critical

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The temperature and pressure at which all three phases exist simultaneously is called the _______ point of a substance.

a. boiling

b. freezing

c. triple

d. critical

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At high altitudes, the boiling point of water is

a. 100 degrees Celsius.

b. greater than 100 degrees Celsius.

c. less than 100 degrees Celsius.

d. equal to its freezing point.

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At high altitudes, the boiling point of water is

a. 100 degrees Celsius.

b. greater than 100 degrees Celsius.

c. less than 100 degrees Celsius.

d. equal to its freezing point.

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Which quantity is not used in calculating the total energy involved in converting 50 g of ice at 0°C to water at 95°C?

a. the mass of the sample

b. the heat of fusion of ice

c. the heat capacity of liquid water

d. the heat of vaporization of water

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Which quantity is not used in calculating the total energy involved in converting 50 g of ice at 0°C to water at 95°C?

a. the mass of the sample

b. the heat of fusion of ice

c. the heat capacity of liquid water

d. the heat of vaporization of water

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The substance that would evaporate most easily is one with ___ intermolecular forces and a ___molar mass.

a. weak; large

b. weak; small

c. strong; large

d. strong; small

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The substance that would evaporate most easily is one with ___ intermolecular forces and a ___molar mass.

a. weak; large

b. weak; small

c. strong; large

d. strong; small

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Substance X has a boiling point of 150 degrees F and a freezing point of 15 degrees F. The condensation point of X

a. is 150 degrees F.

b. is 15 degrees F.

c. is 165 degrees F.

d. is 135 degrees F.

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Substance X has a boiling point of 150 degrees F and a freezing point of 15 degrees F. The condensation point of X

a. is 150 degrees F.

b. is 15 degrees F.

c. is 165 degrees F.

d. is 135 degrees F.

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Which of the terms below does not describe a type of liquid crystal?

a. Eutectic

b. Nematic

c. Smectic

d. Cholesteric

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Which of the terms below does not describe a type of liquid crystal?

a. Eutectic

b. Nematic

c. Smectic

d. Cholesteric