Lecture-2-Chemistry-_37185

Hbondsareweakerthancovalent

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Unformatted text preview: te with nonpolar ones. • Identify the polar & non‐polar area of these molecules: Lipid molecule Carbohydrate Amino acid Ionic Bond Formation • Atoms that gain or lose an electron subsequently gain or lose a negative charge and form ions. • Ionic bonds can form between atoms with very different electronegativities (example: NaCl). – The more electronegative atom (Cl) strips the electron from the other atom (Na), generating oppositely charged ions that attract one another & form an ionic bond: e‐ • • (11p/11n/11e‐) lose outer e‐ (17p/17n/17e‐) gains e‐ *molecules can also be ions Ionic bond formation Na+: Cl‐: (11p/11n/10e‐) (17p/17n/18e‐) cation (+1) anion (‐1) Hydrogen Bonding • Electrical attraction between a hydrogen atom possessing a partial positive charge to an atom having partial Electrical negative charge (typically N or O): – Attrac...
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This note was uploaded on 08/16/2011 for the course BIOL 1361-1362 taught by Professor Any during the Spring '08 term at University of Houston.

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