CHEM 1035 Final Exam Study Guide - Virginia Tech
Weakest forces, exist in all substances, only force in non-polar substances, form temporary
dipoles - correct answer London or Dispersion forces
Dispersion forces ____ with increasing molar mass - correct answer increase
Stronger than dispersion forces, only present in polar substances, attraction between
oppositely charges ends of polar molecules - correct answer Dipole-dipole forces
Dipole-dipole forces ____ with increasing molar mass - correct answer increase
Very strong dipole force, only exist in compounds where H is covalently bonded to O, N, or F,
due to high electronegativity difference in H and O, N, or F - correct answer Hydrogen bonds
Hydrogen bonded substances have ____ boiling points - correct answer high
The strength of hydrogen bonds _____ when ____ H-bonding sites are present - correct answer
increase, more
Intermolecular forces between 2 different substances, between an ion and a polar molecule,
attraction between oppositely charged ends of polar molecule and positive/negatively charged
ion - correct answer Ion-dipole forces
dispersion, dipole-dipole, hydrogen bonding, ion-dipole - correct answer Intermolecular forces
in order on increasing strength
The ____ the intermolecular forces the higher the boiling point - correct answer stronger
For substances with the same type of intermolecular forces the boiling point __ with increasing
molar mass - correct answer increases
Viscosity is dependent on - correct answer intermolecular forces and temperature
Viscosity _____ with increasing temperature - correct answer decreases
Viscosity _____ with stronger intermolecular forces - correct answer increases
Surface tension is dependent on [2 things] - correct answer intermolecular forces and
temperature
Surface tension ____ with stronger intermolecular forces - correct answer increases
Surface tension _____ with increasing temperature - correct answer decreases
Vapor pressure is dependent on - correct answer intermolecular forces and temperature
Vapor pressure ____ with stronger intermolecular forces - correct answer decreases
Vapor Pressure ___ with increasing temperature - correct answer increases
, Boiling point is the point where - correct answer vapor pressure overcomes atmospheric
pressure
Boiling Point is dependent on - correct answer intermolecular forces and atmospheric pressure
Boiling point is ____ when intermolecular forces are weak - correct answer low
Boiling point ____ with increasing atmospheric pressure - correct answer increases
solid to gas - correct answer sublimation
solid to liquid - correct answer melting
liquid to gas - correct answer vaporization
gas to liquid - correct answer condensation
liquid to solid - correct answer freezing
gas to solid - correct answer deposition
sublimation(subl), vaporization(vap), and melting(fus) - correct answer delta H positive
condensation(vap), freezing(fus), and deposition(subl) - correct answer delta H is negative
1 atm = ___ mm Hg = ___ Torr - correct answer 760
(molar mass*P) / (R*T) - correct answer density
mole ratio * total pressure - correct answer partial pressure
sum of partial pressures - correct answer total pressure
the movement of one gas through another - correct answer diffusion
the movement of gas particles through a pinhole - correct answer effusion
Real gases: The volume of gas particles are not equal to ___.There ___ attractive forces -
correct answer zero; are slight
1 oC and 1 atm - correct answer STP
= nRT - correct answer PV
NH4 + - correct answer ammonium
Hg2 2+ - correct answer mercury(I)
CN - - correct answer cyanide
O2 2- - correct answer peroxide
OH - - correct answer hydroxide
Weakest forces, exist in all substances, only force in non-polar substances, form temporary
dipoles - correct answer London or Dispersion forces
Dispersion forces ____ with increasing molar mass - correct answer increase
Stronger than dispersion forces, only present in polar substances, attraction between
oppositely charges ends of polar molecules - correct answer Dipole-dipole forces
Dipole-dipole forces ____ with increasing molar mass - correct answer increase
Very strong dipole force, only exist in compounds where H is covalently bonded to O, N, or F,
due to high electronegativity difference in H and O, N, or F - correct answer Hydrogen bonds
Hydrogen bonded substances have ____ boiling points - correct answer high
The strength of hydrogen bonds _____ when ____ H-bonding sites are present - correct answer
increase, more
Intermolecular forces between 2 different substances, between an ion and a polar molecule,
attraction between oppositely charged ends of polar molecule and positive/negatively charged
ion - correct answer Ion-dipole forces
dispersion, dipole-dipole, hydrogen bonding, ion-dipole - correct answer Intermolecular forces
in order on increasing strength
The ____ the intermolecular forces the higher the boiling point - correct answer stronger
For substances with the same type of intermolecular forces the boiling point __ with increasing
molar mass - correct answer increases
Viscosity is dependent on - correct answer intermolecular forces and temperature
Viscosity _____ with increasing temperature - correct answer decreases
Viscosity _____ with stronger intermolecular forces - correct answer increases
Surface tension is dependent on [2 things] - correct answer intermolecular forces and
temperature
Surface tension ____ with stronger intermolecular forces - correct answer increases
Surface tension _____ with increasing temperature - correct answer decreases
Vapor pressure is dependent on - correct answer intermolecular forces and temperature
Vapor pressure ____ with stronger intermolecular forces - correct answer decreases
Vapor Pressure ___ with increasing temperature - correct answer increases
, Boiling point is the point where - correct answer vapor pressure overcomes atmospheric
pressure
Boiling Point is dependent on - correct answer intermolecular forces and atmospheric pressure
Boiling point is ____ when intermolecular forces are weak - correct answer low
Boiling point ____ with increasing atmospheric pressure - correct answer increases
solid to gas - correct answer sublimation
solid to liquid - correct answer melting
liquid to gas - correct answer vaporization
gas to liquid - correct answer condensation
liquid to solid - correct answer freezing
gas to solid - correct answer deposition
sublimation(subl), vaporization(vap), and melting(fus) - correct answer delta H positive
condensation(vap), freezing(fus), and deposition(subl) - correct answer delta H is negative
1 atm = ___ mm Hg = ___ Torr - correct answer 760
(molar mass*P) / (R*T) - correct answer density
mole ratio * total pressure - correct answer partial pressure
sum of partial pressures - correct answer total pressure
the movement of one gas through another - correct answer diffusion
the movement of gas particles through a pinhole - correct answer effusion
Real gases: The volume of gas particles are not equal to ___.There ___ attractive forces -
correct answer zero; are slight
1 oC and 1 atm - correct answer STP
= nRT - correct answer PV
NH4 + - correct answer ammonium
Hg2 2+ - correct answer mercury(I)
CN - - correct answer cyanide
O2 2- - correct answer peroxide
OH - - correct answer hydroxide
