How to identify intermolecular forces and Polarity and Physical Properties Defintion

Hydrogen bond

H bonded to F,ON (it also has london dispersion, D/D, and hydorgen bond)

Which IMFs are polar

D/D and dispersion

which IMFS are nonppolar

london dispersion force

all homoaomic (N2, O2) molecules are

nonpolar

compound is nonpolar if

1) central atoms has no lone pairs 2) all atoms around the central atom are the same

How to identify ion dipole force

this forcehow to forces exist between an ion and a neutral molecule. If there is an interaction between an ion and a molecule, there are_________ forces.

the difference between london disperison forces and dipole-dipole

D/D conly occurs in polar molecules

D/D vs dispersion forces

D/D only ouccurs in molevules with permanant dipoles so polar compounds

how to tell if a bond is covalent, polar covalent, ot ionic bond

1. If Δ E N < 0.4 , then it's a pure covalent bond.

2. If 0.4 < Δ E N < 1.8 , then it's a polar covalent bond.

3. If Δ E N > 1.8 , then it's an ionic bond.

boiling point

The _________ of a compound is the temperature where the liquid-gas phase change occurs

IMF relationship to boiling point

Boiling point ∝ IMF

Surface Tension

the result of intermolecular forces (IMFs) pulling inward at a liquid's surface, minimizing the iquids surface area

Surface Tension: realtionship to IMF

Surface Tension∝ IMF

capaillary action

Surface phenomenon in which the liquid climbs the walls of the container because of IMF

capaillary action relationship to IMF

capaillary action∝ IMF

Viscosity

The tendency of a liquid to resist pouring because of IMF attraction to bulk solution.

Viscosity relationship to IMF

Viscosity∝ IMF

ΔHvap (heat of vaporization)

the amount of energy an IMF is required to have to change a liquid into a gas at that boiling point

ΔHvap relationship to IMF

ΔHvap ∝ IMF

Vapor Pressure:

The pressure of the vapor above the surface of a liquiD

Vapor Pressure (VP) relationship to IMF

VP directly inverese to IMF

Evaporation Rate

How quickly a liquid will vaporize from the surface of a liquid

Evaporation Rate relationship to IMF

evpaortion rate is directly inverese to IMF

what reactants and products are always in a combustion reaction

O2 —> CO2 + H2O

Melting Point

he temperature at which it changes state from solid to liquid

Melting Point realtionship to IMF

MP is directly propetional to IMFboiling points

Soilds have a higher melting point when

the differnce in electronegativity (EN) is greater aka when the soild is more polar

boiling point versus heat of vaporization

Boiling point is the temperature at which a liquid turns into a gas, while heat of vaporization is the amount of energy required to change a liquid into a gas at that boiling point