INTERMOLECULAR FORCES Flashcards
T/F The fundamental
difference between states
of matter is the strength of
the intermolecular forces
of attraction.
T
they are referred to as the condensed phases
solids and liquids
tendency of an electron cloud to distort
polarizability
T/F If something is easier
to polarize, it has a
high boiling point.
F
Polar molecules have a more positive and a more negative end–a dipole (two poles, δ + and δ).
dipole-dipole interactions
strongest intermolecular force
hydrogen bonding
The dipole–dipole interactions experienced when H is bonded to N, O, or F are unusually strong.
hydrogen bond
interactions found in solutions of ions
ion-dipole interactions
resistance of a liquid to flow
viscosity
T/F Viscosity decreases with stronger
intermolecular forces and increases
with higher temperature.
F
Water acts as if it
has a “skin” on it
due to extra inward
forces on its
surface.
surface tension
Intermolecular forces that bind similar
molecules to one another
cohesive forces
Intermolecular forces that bind a
substance to a surface
adhesive forces
rise of liquids up narrow tubes
capillary actions
T/F Water has stronger
adhesive forces with glass;
mercury has stronger
cohesive forces with itself.
T