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Section 13.5 Complex Mixtures and Structures

Section 13.5 Complex Mixtures and Structures. Bill Vining SUNY Oneonta. Hydrophilic groups : Hydrophobic groups :. –OH and –NH groups and charged groups Examples: CH 3 OH, NH3, H-O-O-H. Long hydrocarbon groups: CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 Examples: CH 3 CH 2 CH 2 CH 2 CH 3

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Section 13.5 Complex Mixtures and Structures

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  1. Section 13.5Complex Mixtures and Structures Bill Vining SUNY Oneonta

  2. Hydrophilic groups:Hydrophobic groups: –OH and –NH groups and charged groups Examples: CH3OH, NH3, H-O-O-H Long hydrocarbon groups: CH3CH2CH2CH2CH2CH2 Examples: CH3CH2CH2CH2CH3 CH3CH2CH2CH2Cl

  3. Proteins

  4. Why do Proteins Fold?

  5. Without lipids, you’d fall apart.

  6. What holds DNA together?

  7. DNA Base Pairs: Hydrogen Bonding

  8. Surfactants: “Amphiphilic” Sodium stearate: made by saponification of oils and fats (fat + base = soap) Sodium lauryl sulfate (from coconut and palm oils)

  9. Laundry!

  10. Hard Water and Phosphate Solubility

  11. Fabric Softener and Hair Conditioner Cationic Surfactants: (CH3)3N+

  12. Colloids: mixture of different phases that do not separate

  13. Emulsions: Milk surface proteins

  14. Colloids: mixture of different phases that do not separate

  15. Alloys: mixtures of metals 24 K gold = pure gold = not very good for jewelry

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