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21 Cards in this Set

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  • Back
forces that occur between molecules
intermolecular forces
when dipole moments moments line up with opposite charges to attract to each other
dipole-dipole attraction
the strongest dipole-dipole moment
hydrogen bonding
forces that exist among noble gas atoms and non polar molecules are
London dispersion forces
normal boiling point
100 Celcius
The Energy required to melt one mol of a substance
molar heat of fusion
the energy required to heat 1 mol of a liquid to vapor
molar heat of vaporization
the process of a liquid becoming a gas
vaporization
the process by which vapor molecules form a liquid
condensation
the pressure of vapor present at an equilibrium
vapor pressure
what is used to measure vapor pressure
barometer
The vapor pressure of a liquid at a given temperature is determined by the ______________ ______ that act among a molecule
intermolecular forces
Liquids that relatively large intermolecular forces are ___ in vapor pressure
low
the greater the elevation the _____ the boiling point is
lower
what are the 3 types of crystalline solids
Ionic, Molecular, and Atomic
ionic solids have ____ melting points
high
Molecular solids melt at ___ temperatures because the bonds are ____
low, weak
a substance that contains a mixture of elements and has metallic properties
alloy
what are the two common types of alloys
substitutional alloy and interstital alloy
when some of the host alloys are replaced by other metal atoms of similar sizes
substitutional alloy
when some of the holes among the closely packed metal atoms are occupied by atoms much smaller than the host atoms
interstitial alloy