BME 410 Lecture Notes - Lecture 11: Hydrophile, Modulus Guitars, Nanometre
20 Apr 2016
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Na binding to cl (cid:2) (cid:2: sodium contributes or donates electron, leaving it with a closed shell, chlorine gains electron, leaving it with a closed shell. The outer electrons are so weakly bound to metal atoms that they are free to roam across the entire metal. Having lost their outer electrons, individual metal atoms are more like positive ions in a swarm of communal electrons. Constituent atoms share a pair of electrons, closing the shell for each: have bonding pairs and lone pairs, ex. Intramolecular forces: forces which keeps molecule together (bonds) Intermolecular forces: attractive force between molecules, responsible for keeping matter in solid or liquid phase. H20: electrons are pulled towards the oxygen, creating a slightly positively charged region. This overall unequal charge is represented by the. Electrons are simultaneously pulled away from the hydrogen towards the oxygen, creating a slightly positive region on the hydrogen: oxygen is slightly negative (more electrons), hydrogen is slightly positive (less electrons)
