Intermolecular vs Intramolecular Interactions

Intermolecular Forces

Attractive forces between molecules

Intramolecular Forces

Hold atoms together in a molecule

Boiling Point

A 'measure' of intermolecular force

Melting Point

A 'measure' of intermolecular force

ΔHvap

A 'measure' of intermolecular force

ΔHfus

A 'measure' of intermolecular force

ΔHsub

A 'measure' of intermolecular force

Polar Covalent Bond

Unequal electron sharing between atoms

Hydrogen Bonding

Type of polar covalent bond with 'H' attracting 'O' or 'N'

Hydrogen Bond

Special dipole-dipole interaction involving 'H' and electronegative atoms

Ion-Dipole Forces

Attractive forces between an ion and a polar molecule

Dipole-Dipole Forces

Attractive forces between polar molecules

Dispersion Forces

Arise from temporary dipoles induced in atoms or molecules

Surface Tension

Energy needed to increase the surface of a liquid

Cohesion

Attraction between like molecules

Adhesion

Attraction between unlike molecules

Viscosity

Measure of a fluid's resistance to flow

Density of Water

Unique property of water

Intramolecular Bonds

Hold atoms within a molecule together

Covalent Bonds

Strong bonds within molecules