Chem02: Polar Molecules, or Why Water Dissolves Salt but not Oil скачать в хорошем качестве

Chem02: Polar Molecules, or Why Water Dissolves Salt but not Oil

If molecules are made of atoms with drastically different electronegativity, some atoms will attract the electrons, and those parts will be slightly more negative. While the other part is slightly more positive. This forms a magnet-like (polar) molecules, which attract other polar molecules. This is responsible for inter-molecular forces. Other type is London Dispersion Forces - it's much weaker, and it forms within non-polar compounds. Full playlist:    • Chem01: Why atoms form molecules   --- 00:00 Polar molecules 00:51 Intermolecular forces 01:21 Water dissolves salt 02:55 Non-polar molecules 03:22 London Dispersion Forces 04:02 Polar & non-polar don't mix 04:52 Lipids: fats, oils 06:45 Saturated & non-saturated fats 07:14 Hydrophilic, Lipophilic compounds 08:00 Soap is an ionized lipid 09:20 Toxicity of hydrophobic compounds Blood - a molecule transporter 10:41 Capsaicin (hot pepper) 11:13 Cell membrane/phospholipids 12:08 Partitioning coefficient (logP) 12:43 LogP in Drug Discovery ---