question

Vaporization is an endothermic process

answer

True

question

More energy is required to break intermolecular attractions when water vaporizes compared to the energy required to break intermolecular attractions when ice melts

answer

True

question

Based on principles of the kinetic molecular theory, the gas least likely to become liquid below 0°C given CH4, C3H8, C4H10 would be CH4

answer

True

question

When water freezes, the energy released is an exothermic process

answer

True

question

The larger the dipole, the larger the attractive force, the higher the boiling point

answer

True

question

Ion dipole interactions are weaker when the distance between two species is larger

answer

True

question

It takes more energy to break a covalent bond or an ionic bond than it does to melt a solid or evaporate a liquid

answer

True

question

The strength of the intermolecular forces that exist between molecules of a pure substance will affect the physical properties of that substance

answer

True

question

As the temperature of a gas increases, the kinetic energy increases

answer

True

question

Changes in pressure do not significantly affect the intermolecular attractive forces for solids.

answer

True

question

CCl4 has a greater polarizability than CH4

answer

True

question

London dispersion forces are the weakest of the intermolecular forces.

answer

True

question

The viscosity of a liquid generally increases with decreasing temperature

answer

True

question

Strong intermolecular forces yield high surface tension for liquids

answer

True

question

For most ionic substances, solubility in water increases with increasing temperature

answer

True

question

The solubility of a gas in liquid is affected by pressure

answer

True

question

The solubility of a gas in water decreases with increasing temperature

answer

True

question

Water is an effective solvent used to dissolve many polar compounds

answer

True

question

Strong electrolytes are solutes that consist predominately of ions once dissolved in water

answer

True

question

Highly soluble compounds are not necessarily strong electrolytes

answer

True

question

Solutions of weak electrolytes consist of both ions and molecules but with a greater proportion of molecules

answer

True

question

HNO3, H2SO4, NaOH, and Ca(OH)2 are strong electrolytes

answer

True

question

Substances with poor solubility may be strong electrolytes

answer

True

question

Most molecular compounds are non-electrolytes.

answer

True

question

Strong electrolytes are solutes that form predominantly ions once dissolved in water.

answer

True

question

As intermolecular forces increase, vapor pressure decreases

answer

True

question

Solid water is less dense than liquid water (above 4°C)

answer

True

question

Increasing the pressure over a liquid will increase the boiling point

answer

True

question

The covalent bonds between hydrogen atoms and the oxygen within a water molecule are much stronger than the intermolecular forces that exist between water molecules.

answer

True

question

Less energy is required to melt a substance than to evaporate the same substance.

answer

True

question

The sigma bond between the two carbon atoms in C2H4 is stronger than the pi bond between the two carbon atoms

answer

True

question

The triple bond between the carbon atoms in C2H2 is shorter than the single bond between the carbon atoms in C2H6.

answer

True

question

Double bonds between carbon atoms are always shorter than single bonds between carbon atoms

answer

True

question

The distance between the nuclei of the atoms in a bond within an organic called the bond length

answer

True

question

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

answer

True

question

Saturated solutions are stable solutions that contain the maximum possible amount of dissolved solute

answer

True

question

A volatile liquid is one that easily evaporates

answer

True

question

Vapor pressure decreases with increasing strength of intermolecular forces

answer

True

question

Molecules or atoms in molecular solids are held together via intermolecular forces

answer

True

question

Metallic solids have atoms at the lattice points of the unit cell

answer

True

question

A body centered unit cell contains the net equivalent of two atoms or molecules.

answer

True

question

In face centered cubic, the packing in this lattice is more efficient that body centered cubic; if the atoms have radius r, then the length of the cube edges is square root of 8 x r; there are four atoms per unit cell in this type of packing; the packing efficiency in this lattice and hexagonal close packing are the same.

answer

True

question

Given: CH3OCH3, CH3CH2OH, CH3CH2CH3; CH3CH2OH would have the highest surface tension.

answer

True

question

A liquid boils when the external pressure over a liquid equals the vapor pressure

answer

True

question

As molecules are forced together due to increased pressure, intermolecular attractions become more significant.

answer

True

question

An unsaturated is one that will allow for more solute to be dissolved into the solvent

answer

True

question

A saturated solution is one that is one that contains the maximum amount of solute that will dissolve at a specific temperature.

answer

True

question

Air is a solution

answer

True

question

Changes in pressure do not affect intermolecular attractive forces for gases

answer

False

question

HCl exhibits significant hydrogen bonding

answer

False

question

Sublimation is an exothermic process

answer

False

question

In separate 1.0L containers at the same temperature, H2O has a higher vapor pressure than Ne once a dynamic equilibrium has been established

answer

False

question

Non-polar benzene, C6H6 will dissolve CaF2 better than Br2

answer

False

question

Most molecular compounds are electrolytes

answer

False

question

Strong acids are weak electrolytes

answer

False

question

The viscosity of a liquid increases with increasing temperature

answer

False

question

He has a greater polarizability than CH4

answer

False

question

Dipole-dipole is the weakest intermolecular force

answer

False

question

Surface tension decreases with increasing intermolecular forces

answer

False

question

Condensation is an exothermic process

answer

False

question

The strength of a carbon-carbon double bond is exactly twice that of the strength of a carbon-carbon single bond

answer

False

question

London dispersion forces tend to decrease in strength with increasing molecular weight

answer

False

question

Ionic solids have formula units in the center of the unit cell

answer

False

question

In face centered cubic, the coordination number of the atoms in the lattice is 8

answer

False

question

SiO2 (molecular) exists in solid state

answer

False

question

More energy is required for a substance to undergo a phase change from solid to liquid compared to phase change from liquid to gas because it is necessary to override more intermolecular attractions in the phase change from solid to liquid.

answer

False

question

The stronger the intermolecular forces between molecules of a pure substance, the lower melting and boiling points.

answer

False

question

As temperature decreases, kinetic energy decreases, therefore attractions between particles will decrease.

answer

False

question

A supersaturated solution is a stable solution.

answer

False

question

A solid can't be a solvent

answer

False

question

Given H2O, CH4, CH3Br, CH3Cl, & He which molecule will have the highest vapor pressure when at the same temperature and volume?

answer

Helium

question

Given H2S, HCl, NH3, CH4, H2O, which molecule will have the highest boiling point?

answer

H2O

question

List in order of increasing boiling point: Ne, HBr, NH3, C2H6

answer

Ne, C2H6, HBr, NH3

question

Given CO2, CH4, Kr, HBr, H2O, which molecule will have the highest boiling point?

answer

H2O

question

Given CF4, CCl4, CBr4, CH4, CI4, which molecule will have the highest boiling point?

answer

CI4

question

A crystalline solid that is soft, has a low melting point, doesn't conduct heat or electricity well in solid, molten, or aqueous form. Examples: SO2, I2

answer

Molecular solid

question

A polymer made in polymerization rxn that produces small molecules (like water)

answer

Condensation

question

A compound in which one or more carbons have double or triple bonds

answer

Unsaturated hydrocarbon

question

Conversion of one form of a molecule into another form by rotation about a C-C single bond occurs very rapidly at room temperature. These different forms are conformations.

answer

Conformation

question

Europium in body-centered cubic - Coordination #= ? - # atoms in 1 unit cell= ?

answer

8, 2

question

Cesium chloride in primitive cubic - # Cesium ions in 1 unit = ?

answer

1

question

Gold in cubic close packed (face centered cubic lattice) - Coordination #= ? - # atoms in 1 unit cell= ?

answer

12, 4

question

KCl in face centered cubic - # K+ & Cl- ions in 1 unit cell= ?

answer

8

question

Hexagonal close packing - # atoms surrounding atom in same plane= ?

answer

6

question

Metal in body centered cubic - Coordination #= ? - # metal atoms in 1 unit cell= ?

answer

8, 2

question

Ionic crystal empirical form: XY2 - X occupies 8 corners & 6 faces - # X ions in 1 unit cell= ? - # Y ions in 1 unit cell= ?

answer

4, 8

question

Ionic crystal empirical form AX3 in simple cubic - A ions are lattice points - # of A ions in 1 unit cell= ? - # of X ions in 1 unit cell= ?

answer

1, 3

question

Chromium in face centered cubic - # atoms per unit cell= ?

answer

4

question

Chromium in body centered cubic - # atoms per unit cell= ?

answer

2

question

he dissolution of water in octane (C8H18) is prevented mostly by:

answer

Hydrogen bonding

question

What's more soluble than benzene?

answer

SO2, Na2SO4

question

What's less soluble than benzene?

answer

CO2, C2H6, Br2, CH4

question

Should C8H18 be soluble in CCl4

answer

Yes

question

Given the choices: CH3CH2OH, NH3, NaCl, HBr, what should dissolve in benzene?

answer

CCl4

question

Will NiBr2+ AgNO3 precipitate?

answer

Yes

question

Na2CO3+BaCl2-->?

answer

BaCO3

question

What's more soluble in water than benzene, given: Br2, NaI, CCl4, CH2O

answer

NaI, CH2O

question

What is the precipitate of Sr(NO3)2 + Na2CO3?

answer

SrCO3 (s)

question

What is the precipitate of 3Ag+(aq)+PO43-(aq)+3K+(aq)+3NO3-(aq)-->?

answer

Ag3PO4(s)

question

What is the precipitate of Pb2+(aq)+ CO32-(aq)-->? Lead(II)acetate plus sodium carbonate

answer

PbCO3

question

What is the precipitate of Sr(NO3)2(aq)+ Na2CO3(aq)-->?

answer

SrCO3

question

What is the precipitate of CuSO4(aq)+ BaCl2(aq)-->?

answer

BaSO4

question

What is the precipitate of 2NaCl(aq)+Hg2(NO3)2(aq)-->?

answer

Hg2Cl2

question

What is the precipitate of AgNO3(aq) + KI(aq)

answer

AgI

question

molecules have dipole-dipole interactions, hydrogen bonding, and dispersion forces

answer

True

question

What is the the intermolecular force responsible for the fact that CH4 has the lowest boiling point in the set CH4, SiH4, GeH4, and SnH4?

answer

London dispersion force

question

The strongest intermolecular interactions between hydrogen sulfide (H2S) molecules arise from?

answer

Dipole dipole force

question

What property indicates presence of strong intermolecular forces in a liquid?

answer

A low vapor pressure

question

What is the intermolecular force responsible for SnH4 having the highest boiling point in comparison to CH4, SiH4, GeH4?

answer

London dispersion force

question

hydrogen bromide, what's the most important molecular force

answer

Dipole dipole

question

The strongest intermolecular attractions between ethyl alcohol (CH3CH2OH) arise from?

answer

Hydrogen bonding

question

What is the strongest intermolecular forces given ion-induced, dipole induced, ion-dipole, dipole-dipole, and dispersion?

answer

Ion dipole

question

What is a mixture of molecules and ions, but with a greater portion of molecules? Examples: H2O, N2, CH3COOH (acetic acid), C2H6O (ethanol)

answer

Weak electrolyte

question

What is a mixture of molecules and ions, but with a greater portion of ions? Example: Strong base, strong acid, ions only, KOH.

answer

Strong electrolyte

question

Is argon an electrolyte?

answer

No

question

Are these all electrolytes? (1) HCl (2) Rb2SO4 (3) KOH (4) NaCl (5) HBr

answer

Yes

question

In trans-2-butene, Carbon #2 is sp2 hybridized

answer

True

question

In trans-2-butene - The molecule has two pi bonds - There's free rotation around every bond in the molecule - 2-butyne is its structural isomer

answer

False

question

What is this? C2H4. Alkane, Alkene, or Alkyne?

answer

Alkyne

question

What is the most characteristic reaction of an alkyne?

answer

Addition

question

What is the most characteristic reaction of an alkene?

answer

Addition

question

PH3: Dipole-dipole True or False

answer

True

question

CH4: London dispersion force True or False

answer

True

question

Br2: London dispersion force True or False

answer

True

question

H2O2: Hydrogen bonding True or False

answer

True

question

Au: Metal crystal True or False

answer

True

question

NiO: Ionic crystal True or False

answer

True

question

C: Covalent crystal True or False

answer

True

question

H2O: Molecular crystal True or False

answer

True

question

SO2: Dipole-dipole True or False

answer

True

question

He: London dispersion force True or False

answer

True

question

CH3CH2-OH: Hydrogen bonding True or False

answer

True

question

AsH3: Dipole-dipole True or False

answer

True

question

C(diamond): Covalent network True or False

answer

True

question

NaCl: Ionic network True or False

answer

True

question

C(Graphite): Covalent network True or False

answer

True

question

Na: Metallic True or False

answer

True

question

C8H18 (octane): London dispersion force True or False

answer

True

question

HI: Hydrogen bonding True or False

answer

False

question

CS2: Dipole-dipole True or False

answer

False

question

CH3F: Hydrogen bonding True or False

answer

False

question

CO2: Dipole-dipole Truen or False

answer

False

question

CH2F2: London dispersion force True or False

answer

False

question

HF: Dipole-dipole True or False

answer

False

question

What functional group is H2CO?

answer

Aldehyde

question

What functional group is CH3CO2H?

answer

Carboxylic acid

question

What functional group is CH3CH2OH?

answer

Alcohol

question

What functional group is CH3CCH2CH3?

answer

Ketone

question

C-H bond of carbonyl carbon in an Aldehyde is a ______ bond and the carbon atom is ____hybridized

answer

sigma, sp3

question

Are these structural isomers of 1-pentene? (1) 2-penetene (2) 2-methyl-2-butene (3) Cyclopentane (4) 3-methyl-butene

answer

Yes

question

Is this a structural isomer of 1-pentene? 1-methyl-cyclobutene

answer

No

question

Are these cis or trans isomers? (1) 1,2-dibromoethane (both?) (2) 2-butene (3) 3-hexene (4) 1,2-dichloroethene (5) 1,2-dichloro-1-pentene (6) 2,3-dicholoro-2-hexene

answer

Yes

question

How many isomers of C2H2Cl2 are polar?

answer

2

question

How many structural isomers can be drawn for C5H10?

answer

11

question

How many isomers (stereo and constitutional) are possible, C4H8?

answer

6

question

How many constitutional isomers are possible for c4h9cl?

answer

4

question

Is 2-chlorobutane chiral?

answer

Yes

question

Is 2,3-dibromopentane chiral?

answer

Yes

question

Is 1,3-dibromobutane chiral?

answer

Yes

question

Is 1-bromo-2-chlorobutane chiral?

answer

Yes

question

Is CH2Cl2 chiral?

answer

No

question

Is HN(CH3)2 chiral?

answer

No

question

Is 2-chloropropane chiral?

answer

No

question

Is 3-chloropentane chiral?

answer

No

question

Is 1,4-dibromobutane chiral?

answer

No

question

What does Carboxylic acid+ alcohol produce?

answer

Water and an ester

question

many isomeric alcohols have molecular formula C4H10O?

answer

4

question

What is a critical characteristic for the monomers that form condensation polymers?

answer

Presence of two functional groups

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