-
Which of the intermolecular forces is the weakest?
London dispersion forces
-
What force exists between all molecules?
London dispersion forces
-
London dispersion forces increase as molar mass _______
increases
-
Dipole-dipole forces increase with _____________ polarity
increasing
-
Hydrogen bonding is a type of ________ force
dipole-dipole
-
Hydrogen bonding bonds hydrogen to _________
fluorine, oxygen, or nitrogen
-
Viscosity is a measure of a fluid's ____________________
resistance to flow
-
Viscosity increases as the strength of intermolecular force __________
increases
-
Surface tension is __________
the amount of energy required to increase the surface area of a liquid
-
Cohesive forces __________
bind molecules of the same kind to each other
-
Adhesive forces __________
bind molecules of different kinds to each other
-
Liquid boils when __________
the vapor pressure equals the external pressure
-
Temperature of boiling point increases as pressure __________
increases
-
__________ are well ordered, definite arrangement of molecules, atoms, or ions
Crystalline solids
-
Crystals have a(n) __________ structure
ordered, repeated
-
A unit cell is __________
the smallest repeating unit in a crystal
-
A crystal lattice is __________
three dimensional stacking of unit cells
-
Molecular solids are__________
soft with low melting points and poor conductivity
-
Weak intermolecular forces means __________ melting point
Low
-
Room temperature gases and liquids usually form __________ solids at low temperature
molecular
-
Covalent solids are __________
very hard with high melting points and poor conductivity
-
Covalent solids are __________ ordered
well
-
Ionic solids are __________
hard, brittle, have a high melting point, and poor conductivity
-
Metallic solids are
both soft and hard, have high melting points, have good conductivity, and are malleable and ductile
|
|