UNE CHEM 1011 General Chemistry II Midterm Fall
2024/2025 Questions With Complete Solutions
intermolecular forces - -the various forces of attraction that may exist between the
atoms and molecules of a substance due to electrostatic phenomena
kinetic energies - -the energy required to overcome the attractive forces and thus
increase the distance between particles
Intramolecular forces - -within the molecule that keep the molecule together
Intermolecular forces - -attractions between molecules, which determine many of
the physical properties of a substance.
van der Waals forces - -all of the attractive forces between neutral atoms and
molecules
the London dispersion force - -one of three van der Waals forces is present in all
condensed phases, known as "dispersion force". electrons of an atom or molecule are in
constant motion.
instantaneous dipole - -if its electrons are distributed asymmetrically
induced dipole - -distort the electrons of a neighboring atom or molecule
Dispersion forces trend - -Larger and heavier atoms and molecules exhibit stronger
dispersion forces than do smaller and lighter atoms and molecules.
Halogen molar mass, atomic radius, melting point, and boiling point trend - -from the
top of the group of halogens to the bottom all of the molar mass, atomic radius, melting
point, and boiling point will be increasing.
Reason behind molar mass, atomic radius, melting point, and boiling point trend - -
Valence electrons farther away from the nucleus are stronger in terms of molar mass,
atomic radius, melting point, and boiling point trend
Polarizability - -The measure of how easy or difficult it is for another electrostatic
charge (for example, a nearby ion or polar molecule) to distort a molecule's charge
distribution (its electron cloud) is...
Hydrogen bonding - -Molecules with F-H, O-H, or N-H
viscosity - -measure of its resistance to flow
factors of viscosity - -IMFs between the molecules of a liquid, the size and shape of
the molecules, and the temperature
, UNE CHEM 1011 General Chemistry II Midterm Fall
2024/2025 Questions With Complete Solutions
viscosity of the liquid decreases. - -As the temperature increases, the molecules
move more rapidly and their kinetic energies are better able to overcome the forces that
hold them together; thus...
cohesive forces - -IMF between identical molecules of a substance are...
Surface tension - -as the energy required to increase the surface area of a liquid, or
the force required to increase the length of a liquid surface by a given amount.
adhesive forces - -IMFs of attraction between two different molecules
capillary action - -when a liquid flows within a porous material due to the attraction
of the liquid molecules to the surface of the material and to other liquid molecules.
boiling point - -temperature at which its equilibrium vapor pressure is equal to the
pressure exerted on the liquid by its gaseous surroundings.
normal boiling point - -its boiling point when surrounding pressure is equal to 1 atm
Vaporization is an... - -endothermic process
endothermic - -positive number
exothermic - -negative number
melting point of the solid - -The temperature at which the solid and liquid phases of a
given substance are in equilibrium is called the...
freezing point of the liquid - -The temperature at which the solid and liquid phases of
a given substance are in equilibrium is called the...
sublimation - -solids can transition directly into the gaseous state, bypassing the
liquid state...
deposition - -reverse of sublimation
supercritical fluid - -physical properties are intermediate between those of the
gaseous and liquid states.
critical point - -temperature and pressure above which supercritical fluid exists
crystalline solids - -atoms, ions, or molecules are arranged in a definite repeating
pattern.
amorphous solids - -atoms, ions, or molecules are arranged in a definite NON-
repeating pattern.
2024/2025 Questions With Complete Solutions
intermolecular forces - -the various forces of attraction that may exist between the
atoms and molecules of a substance due to electrostatic phenomena
kinetic energies - -the energy required to overcome the attractive forces and thus
increase the distance between particles
Intramolecular forces - -within the molecule that keep the molecule together
Intermolecular forces - -attractions between molecules, which determine many of
the physical properties of a substance.
van der Waals forces - -all of the attractive forces between neutral atoms and
molecules
the London dispersion force - -one of three van der Waals forces is present in all
condensed phases, known as "dispersion force". electrons of an atom or molecule are in
constant motion.
instantaneous dipole - -if its electrons are distributed asymmetrically
induced dipole - -distort the electrons of a neighboring atom or molecule
Dispersion forces trend - -Larger and heavier atoms and molecules exhibit stronger
dispersion forces than do smaller and lighter atoms and molecules.
Halogen molar mass, atomic radius, melting point, and boiling point trend - -from the
top of the group of halogens to the bottom all of the molar mass, atomic radius, melting
point, and boiling point will be increasing.
Reason behind molar mass, atomic radius, melting point, and boiling point trend - -
Valence electrons farther away from the nucleus are stronger in terms of molar mass,
atomic radius, melting point, and boiling point trend
Polarizability - -The measure of how easy or difficult it is for another electrostatic
charge (for example, a nearby ion or polar molecule) to distort a molecule's charge
distribution (its electron cloud) is...
Hydrogen bonding - -Molecules with F-H, O-H, or N-H
viscosity - -measure of its resistance to flow
factors of viscosity - -IMFs between the molecules of a liquid, the size and shape of
the molecules, and the temperature
, UNE CHEM 1011 General Chemistry II Midterm Fall
2024/2025 Questions With Complete Solutions
viscosity of the liquid decreases. - -As the temperature increases, the molecules
move more rapidly and their kinetic energies are better able to overcome the forces that
hold them together; thus...
cohesive forces - -IMF between identical molecules of a substance are...
Surface tension - -as the energy required to increase the surface area of a liquid, or
the force required to increase the length of a liquid surface by a given amount.
adhesive forces - -IMFs of attraction between two different molecules
capillary action - -when a liquid flows within a porous material due to the attraction
of the liquid molecules to the surface of the material and to other liquid molecules.
boiling point - -temperature at which its equilibrium vapor pressure is equal to the
pressure exerted on the liquid by its gaseous surroundings.
normal boiling point - -its boiling point when surrounding pressure is equal to 1 atm
Vaporization is an... - -endothermic process
endothermic - -positive number
exothermic - -negative number
melting point of the solid - -The temperature at which the solid and liquid phases of a
given substance are in equilibrium is called the...
freezing point of the liquid - -The temperature at which the solid and liquid phases of
a given substance are in equilibrium is called the...
sublimation - -solids can transition directly into the gaseous state, bypassing the
liquid state...
deposition - -reverse of sublimation
supercritical fluid - -physical properties are intermediate between those of the
gaseous and liquid states.
critical point - -temperature and pressure above which supercritical fluid exists
crystalline solids - -atoms, ions, or molecules are arranged in a definite repeating
pattern.
amorphous solids - -atoms, ions, or molecules are arranged in a definite NON-
repeating pattern.
