CHEM 1035 Final Exam Study Guide - Virginia Tech
1. Weakest forces, exist in all substances, only force in non-polar
sub- stances, form temporary dipoles: London or Dispersion forces
2. Dispersion forces with increasing molar mass: increase
3. Stronger than dispersion forces, only present in polar substances, at-
traction between oppositely charges ends of polar molecules: Dipole-
dipole forces
4. Dipole-dipole forces with increasing molar mass: increase
5. 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: Hydrogen bonds
6. Hydrogen bonded substances have boiling points: high
7. The strength of hydrogen bonds when H-bonding sites are
present: increase, more
8. 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: Ion-dipole forces
9. dispersion, dipole-dipole, hydrogen bonding, ion-dipole:
Intermolecular forces in order on increasing strength
10.The the intermolecular forces the higher the boiling point: stronger
11.For substances with the same type of intermolecular forces the
boiling point with increasing molar mass: increases
,12.Viscosity is dependent on: intermolecular forces and temperature
13.Viscosity with increasing temperature: decreases
14.Viscosity with stronger intermolecular forces: increases
15.Surface tension is dependent on [2 things]: intermolecular forces and
tem- perature
16.Surface tension with stronger intermolecular forces: increases
17.Surface tension with increasing temperature: decreases
18.Vapor pressure is dependent on: intermolecular forces and
temperature
19.Vapor pressure with stronger intermolecular forces: decreases
20.Vapor Pressure with increasing temperature: increases
, 21.Boiling point is the point where: vapor pressure overcomes
atmospheric pressure
22.Boiling Point is dependent on: intermolecular forces and
atmospheric pres- sure
23.Boiling point is when intermolecular forces are weak: low
24.Boiling point with increasing atmospheric pressure: increases
25.solid to gas: sublimation
26.solid to liquid: melting
27.liquid to gas: vaporization
28.gas to liquid: condensation
29.liquid to solid: freezing
30.gas to solid: deposition
31.sublimation(subl), vaporization(vap), and melting(fus): delta H positive
32.condensation(vap), freezing(fus), and deposition(subl): delta H is
negative
33.1 atm = mm Hg = Torr: 760
34.(molar mass*P) / (R*T): density
35.mole ratio * total pressure: partial pressure
36.sum of partial pressures: total pressure
37.the movement of one gas through another: diffusion
38.the movement of gas particles through a pinhole: effusion
1. Weakest forces, exist in all substances, only force in non-polar
sub- stances, form temporary dipoles: London or Dispersion forces
2. Dispersion forces with increasing molar mass: increase
3. Stronger than dispersion forces, only present in polar substances, at-
traction between oppositely charges ends of polar molecules: Dipole-
dipole forces
4. Dipole-dipole forces with increasing molar mass: increase
5. 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: Hydrogen bonds
6. Hydrogen bonded substances have boiling points: high
7. The strength of hydrogen bonds when H-bonding sites are
present: increase, more
8. 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: Ion-dipole forces
9. dispersion, dipole-dipole, hydrogen bonding, ion-dipole:
Intermolecular forces in order on increasing strength
10.The the intermolecular forces the higher the boiling point: stronger
11.For substances with the same type of intermolecular forces the
boiling point with increasing molar mass: increases
,12.Viscosity is dependent on: intermolecular forces and temperature
13.Viscosity with increasing temperature: decreases
14.Viscosity with stronger intermolecular forces: increases
15.Surface tension is dependent on [2 things]: intermolecular forces and
tem- perature
16.Surface tension with stronger intermolecular forces: increases
17.Surface tension with increasing temperature: decreases
18.Vapor pressure is dependent on: intermolecular forces and
temperature
19.Vapor pressure with stronger intermolecular forces: decreases
20.Vapor Pressure with increasing temperature: increases
, 21.Boiling point is the point where: vapor pressure overcomes
atmospheric pressure
22.Boiling Point is dependent on: intermolecular forces and
atmospheric pres- sure
23.Boiling point is when intermolecular forces are weak: low
24.Boiling point with increasing atmospheric pressure: increases
25.solid to gas: sublimation
26.solid to liquid: melting
27.liquid to gas: vaporization
28.gas to liquid: condensation
29.liquid to solid: freezing
30.gas to solid: deposition
31.sublimation(subl), vaporization(vap), and melting(fus): delta H positive
32.condensation(vap), freezing(fus), and deposition(subl): delta H is
negative
33.1 atm = mm Hg = Torr: 760
34.(molar mass*P) / (R*T): density
35.mole ratio * total pressure: partial pressure
36.sum of partial pressures: total pressure
37.the movement of one gas through another: diffusion
38.the movement of gas particles through a pinhole: effusion
