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

2. 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 CH 3 CH 2 CH 2 CH 2 Cl

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

9. Laundry!

10. Hard Water and Phosphate Solubility

12. Fabric Softener and Hair Conditioner Cationic Surfactants: (CH 3 ) 3 N +

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

15. Emulsions: Milk surface proteins

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

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