Boiling Point of Molecules - How strong molecules are interacting with each other - The larger the dipole moment, the stronger the interaction +d -d +d -d +d -d +d -d +d -d +d -d

Boiling Point of Alkanes Induced dipole-induced dipole interaction AKA van der Waals force (interaction) +d -d +d +d -d -d

Boiling Point of Molecules - Hydrogen bond - Polarized covalent bond H H O H O H H O H H O O H H H - Other example of H-bond: NH, SH,

Melting Point of Molecules - How well molecules are “packed” - The better the packing, the higher the melting point

Solubility of Molecules - How well molecules interact with solvents - solvation O H O H methanol H H C O +d +d alkane H H H -d -d O H O O H H O H H