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AP Chemistry Intermolecular forces

AP Chemistry Intermolecular forces

memorize.aimemorize.ai (lvl 286)
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28 cards
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Section 1

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Hydrogen bonding

Front

1 / 28

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Mar 1, 2020

Cards (28)

Section 1

(28 cards)

Hydrogen bonding

Front

The predominant intermolecular force in (CH3)2NH is __________. a. London dispersion forces b. ion-dipole forces c. ionic bonding d. dipole-dipole forces e. hydrogen bonding

Back

CH3OH

Front

In which of the following molecules is hydrogen bonding likely to be the most significant component of the total intermolecular forces? CH4 C5H11OH C6H13NH2 CH3OH CO2

Back

E

Front

Large intermolecular forces in a substance are manifested by __________. a. low vapor pressure b. high boiling point c. high heats of fusion and vaporization d. critical temperatures and pressures e. all of the above

Back

Br2

Front

Of the following, __________ has the highest boiling point. N2 Br2 H2 Cl2 O2

Back

freezing

Front

Of the following, __________ is an exothermic process. a. melting b. subliming c. freezing d. boiling e. All of the above are exothermic.

Back

SiH4

Front

Which one of the following should have the lowest boiling point? .PH3 H2S HCl SiH4 H2O

Back

Ionic Bonding

Front

The predominant intermolecular force in CaBr2 is __________. a. London-dispersion forces b. ion-dipole forces c. ionic bonding d. dipole-dipole forces e. hydrogen bonding

Back

H2O

Front

Of the following substances, __________ has the highest boiling point. H2O CO2 CH4 Kr NH3

Back

London dispersion forces

Front

What is the predominant intermolecular force in CBr4? a. London-dispersion forces b. ion-dipole attraction c. ionic bonding d. dipole-dipole attraction e. hydrogen-bonding

Back

CH4

Front

Of the following, __________ is the most volatile. CBr4 CCl4 CF4 CH4 C6H14

Back

D

Front

In liquids, the attractive intermolecular forces are __________. a. very weak compared with kinetic energies of the molecules b. strong enough to hold molecules relatively close together c. strong enough to keep the molecules confined to vibrating about their fixed lattice points d. not strong enough to keep molecules from moving past each other e. strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other

Back

freezing point

Front

On a phase diagram, the melting point is the same as the __________

Back

Molecular

Front

__________ solids consist of atoms or molecules held together by dipole-dipole forces, London disperson forces, and/or hydrogen bonds. a. Ionic b. Molecular c. Metallic d. Covalent-network e. Metallic and covalent-network

Back

E

Front

__________ are particularly polarizable. a. Small nonpolar molecules b. Small polar molecules c. Large nonpolar molecules d. Large polar molecules e. Large molecules, regardless of their polarity,

Back

solid, gas

Front

The strongest interparticle attractions exist between particles of a _____and the weakest exists between particles of a _____

Back

Kr

Front

Of the following substances, only __________ has London dispersion forces as its only intermolecular force. a. CH3OH b. NH3 c. H2S d. Kr e. HCl

Back

Dispersion forces

Front

. C12 H26 molecules are held together by __________. a. ion-ion interactions b. hydrogen bonding c. ion-dipole interactions d. dipole-dipole interactions e. dispersion forces

Back

Dipole-dipole attractions

Front

Hydrogen bonding is a special case of __________. a. London-dispersion forces b. ion-dipole attraction c. dipole-dipole attractions d. ion-ion interactions e. none of the above

Back

b

Front

Crystalline solids __________. a. have their particles arranged randomly b. have highly ordered structures c. are usually very soft d. exist only at high temperatures e. exist only at very low temperatures

Back

CH4

Front

Of the following substances, only __________ has London dispersion forces as its only intermolecular force.CH3OH b. NH3 H2S CH4 HCl

Back

B

Front

Volatility and vapor pressure are __________. a. inversely proportional to one another b. directly proportional to one another c. not related d. the same thing e. both independent of temperature

Back

AsH3

Front

Which one of the following exhibits dipole-dipole attraction between molecules? a. XeF4 b. AsH3 c. CO2 d. BCl3 e. Cl2

Back

more separated, less

Front

As a solid element melts, the atoms become _____ and they have _____ attraction for each other

Back

E

Front

A volatile liquid is one that __________. a. is highly flammable b. is highly viscous c. is highly hydrogen-bonded d. is highly cohesive e. readily evaporates

Back

Ion-Dipole

Front

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called a(n) __________ interaction. a. dipole-dipole b. ion-ion c. hydrogen bonding d. ion-dipole e. London dispersion force

Back

Viscosity

Front

The resistance to flow

Back

London dispersion forces

Front

Elemental iodine (I2) is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid? a. London dispersion forces b. dipole-dipole rejections c. ionic-dipole interactions d. covalent-ionic interactions e. dipole-dipole attractions

Back

All

Front

Which statements about viscosity are true? (i) Viscosity increases as temperature decreases. (ii) Viscosity increases as molecular weight increases. (iii) Viscosity increases as intermolecular forces increase.

Back