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Unformatted text preview: 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‐ Ionic bond formation (11p/11n/11e‐) lose outer e‐ (17p/17n/17e‐) gains e‐ *molecules can also be ions • • 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):
– Attraction of water molecules to each other is an example; also within or bet...
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- Spring '10