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UNE CHEM 1011 General Chemistry II Midterm Fall 2023 Questions With Complete Solutions
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UNE CHEM 1011 General Chemistry II Midterm Fall 2023 Questions With Complete Solutions
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UNE CHEM 1011 General Chemistry IIMidterm Fall 2023 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
-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
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