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Intermolecular Forces
Chemistry
53
Chemistry
10th Grade
02/01/2012

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Cards

Term
Three types of intermolecular forces
Definition

London Dispersion

Dipole-Dipole

Ionic

Term
What is an ion dipole?
Definition
Force between an ion and the partial charge on the end of a polar molecule
NOT REALLY IMPORTANT
Term
Dipole-Dipole
Definition
Polar molecules attracted to each other
Term
With molecules of equal mass and size what happens with increasing polarity?
Definition
Dipole-Dipole Strength increases
Term
London Dispersion
Definition
Everything has London Dispersion
Attraction between all molecules
Term
As molecular weight increases so does what?
Definition
Strength of London Dispersion
Term
Hydrogen bonding occurs when Hydrogen bonds to?
Definition
F, O, or N
Term
Hydrogen bonding Definition
Definition
Very strong Dipole-Dipole
H-F is most polar, so strongest
Term
Which is more dense. Ice or Water? Why?
Definition
Water
Molecules assume an ordered, open arrangement
Term
Ions are involved
Polar molecules and ions are present
Definition
Ion-Dipole Forces
Term
Ions are involved
Only ions are present
Definition
Ionic Bonding
Term
Ions aren't involved
Polar molecules aren't involved
Definition
London Dispersion Forces
Term
Ions aren't involved
Polar molecules are involved
Hydrogen not bonded O, N, or F
Definition
Dipole-Dipole Forces
Term
Ions aren't involved
Polar molecules are involved
Hydrogen bonded O, N, or F
Definition
Hydrogen Bonding
Term
Organize these in terms of 1. being Weakest
Dipole-Dipole
H-Bonding
Ionic Bonding
London Dispersion
Ion-Dipole
Definition
First is weakest remember
1. London Dispersion
2. Dipole-Dipole
3. H-Bonding
4. Ion-Dipole
5. Ionic Bonding
Term
Viscosity
Definition
Resistance of liquid to flow
Term
Viscosity ______ as molecular weight increases
Definition
Increases
Term
Viscosity _____ with increasing temperature
Definition
Decreases
Term
Why do liquids bead up on surfaces
Definition
Surface Tension
Term
Surface Tension
Definition
Energy required to increase the surface area of a liquid
Term
Heat of fusion
Definition
Energy required to melt a solid
Term
Heat of vaporization
Definition
Energy required to make a liquid a gas
Term
Critical temperature
Definition
Highest temperature at which a liquid phase can form
Term
Critical Pressure
Definition
Pressure required at the critical tiemperature
Term
Nonpolar, low weight substances have _____ critical temperatures and pressures
Definition
Lower
Term
Vapor Pressure
Definition
Pressure exerted by a gas on its space
Term
Volatile liquids Definition
Definition
Liquids that evaporate readily/quick
Term
Volatile liquids have __ vapor pressures
Definition
High
Term
Triple Point
Definition
All 3 phases at equilibrium
Term
Orderring of atoms in Crystalline solid
Definition
Well defined
Term
Properties of molecular bonds in crystalline solids
Definition
Fairly soft
Low melting point
Dont conduct electricity
Term
Forces between molecular bonds in crystalline solids
Definition
LD
Dipole-Dipole
H-Bonds
Term
Form of unit particles of molecular bonds in crystalline solids
Definition
Atoms or molecules
Term
Properties of Covalent-network bonds in crystalline solids
Definition
Very Hard
Very high melting point
Dont conduct electricity
Term
Properties of Ionic bonds in crystalline solids
Definition
Hard and brittle
High melting point
Dont conduct electricity
Term
Properties of Metallic bonds in crystalline solids
Definition
Soft to very hard
Low to very High melting point
Conduct electricity
Malleable and Ductle
Term
Forces between Covalent-network bonds in crystalline solids
Definition
Covalent Bonds
Term
Forces between Ionic bonds in crystalline solids
Definition
Electrostatic attractions?
Term
Forces between Metallic bonds in crystalline solids
Definition
Metallic Bonds
Term
Form of unit particles of Covalent-network bonds in crystalline solids
Definition
Atoms connected in a network of covalent bonds
Term
Form of unit particles of Ionic bonds in crystalline solids
Definition
Positive and negative ions
Term
Form of unit particles of Metallic bonds in crystalline solids
Definition
Atoms
Term
What are Diamond and SiO2 and Graphite
Definition
Covalent Network
Term
Most substances that are gas or liquid at room temperature are usually ______ solids
Definition
Molecular
Term
What is the only type of bond not due to LD
Definition
The bonds in metallic solids
Term
Stronger the IMF the ____ the viscosity
Definition
Greater
Term
What are held together by a "sea" of electrons
Definition
Metallic Solids
Term
volatility= what in relation to imf
Definition
Lowest
Term
Odor
Definition
High vapor pressure and volatility
Term
What conducts electricity only when melted or dissolved
Definition
Ionic
Term
What is usually water soluble
Definition
Ionic
Term
Insoluble in water
Definition
LD nonpolar with covalent bonds
Term
Insoluble in common solvents
Definition
Covalent
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