3. Explain in your own words what a lipid is. 4. In a previous lab an enzyme was used to hydrolyze fats. In this experiment the same thing was done using NaOH. Draw the structural formulas of the two products of the hydrolyzation of this triglyceride: H-C-o-č(CH);CH3 H-C-0-C H 5. This is a soap molecule: Na* OC(CH,),CH, a Circle the portion of the molecule that is attracted to water. b. Underline the portion of the molecule that is attracted to nonpolar molecules such as oil. 6. Explain what a micelle is. (Include a diagram if you want). wash 10. Explain how soap can remove oily dirt when you os your hands.

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### Understanding Lipids and Soap Chemistry

**3. Explain in your own words what a lipid is.**

Lipid is a term used to describe a diverse group of naturally occurring molecules, including fats, oils, waxes, and certain vitamins. They are primarily composed of hydrocarbons and are hydrophobic, meaning they do not dissolve in water. Lipids play key roles in energy storage, cell membrane structure, and signaling within the body.

**4. Hydrolysis of Triglycerides**

In a previous lab session, an enzyme was used to hydrolyze fats. For this experiment, a similar hydrolysis process was conducted using NaOH (sodium hydroxide). Below is the structural breakdown of a triglyceride molecule:

#### Triglyceride Structure:
```
    O
    ||
H - C - O - C(CH2)8CH3
    |
H - C - O - C(CH2)8CH3
    |
H - C - O - C(CH2)8CH3
    |
    H
```

**Products after Hydrolysis:**

- Glycerol (not explicitly depicted)
- Sodium salts of fatty acids (soap molecules)

**5. Structure of a Soap Molecule**

Below is the representation of a soap molecule:

```
   O
   ||
Na⁺ - O - C(CH2)nCH3
```

- **a.** Circle the portion of the molecule that is attracted to water. 
  - This is the ionic (Na⁺-O) part of the molecule, which is hydrophilic (water-attracting).
  
- **b.** Underline the portion of the molecule that is attracted to nonpolar molecules such as oil.
  - This is the hydrocarbon chain (C(CH2)nCH3), which is hydrophobic (oil-attracting).

**6. Explain what a micelle is.**

A micelle is an aggregate of surfactant molecules dispersed in a liquid colloid. In water, soap molecules spontaneously form micelles where the hydrophobic tails are shielded from water by the hydrophilic heads. This arrangement helps trap oil and dirt in the center, effectively cleaning surfaces.

**10. How soap removes oily dirt when you wash your hands.**

Soap cleans by acting as an emulsifier. During washing, soap molecules arrange themselves around oily dirt particles so that the hydrophilic side faces the water and the hydrophobic side attaches to
Transcribed Image Text:### Understanding Lipids and Soap Chemistry **3. Explain in your own words what a lipid is.** Lipid is a term used to describe a diverse group of naturally occurring molecules, including fats, oils, waxes, and certain vitamins. They are primarily composed of hydrocarbons and are hydrophobic, meaning they do not dissolve in water. Lipids play key roles in energy storage, cell membrane structure, and signaling within the body. **4. Hydrolysis of Triglycerides** In a previous lab session, an enzyme was used to hydrolyze fats. For this experiment, a similar hydrolysis process was conducted using NaOH (sodium hydroxide). Below is the structural breakdown of a triglyceride molecule: #### Triglyceride Structure: ``` O || H - C - O - C(CH2)8CH3 | H - C - O - C(CH2)8CH3 | H - C - O - C(CH2)8CH3 | H ``` **Products after Hydrolysis:** - Glycerol (not explicitly depicted) - Sodium salts of fatty acids (soap molecules) **5. Structure of a Soap Molecule** Below is the representation of a soap molecule: ``` O || Na⁺ - O - C(CH2)nCH3 ``` - **a.** Circle the portion of the molecule that is attracted to water. - This is the ionic (Na⁺-O) part of the molecule, which is hydrophilic (water-attracting). - **b.** Underline the portion of the molecule that is attracted to nonpolar molecules such as oil. - This is the hydrocarbon chain (C(CH2)nCH3), which is hydrophobic (oil-attracting). **6. Explain what a micelle is.** A micelle is an aggregate of surfactant molecules dispersed in a liquid colloid. In water, soap molecules spontaneously form micelles where the hydrophobic tails are shielded from water by the hydrophilic heads. This arrangement helps trap oil and dirt in the center, effectively cleaning surfaces. **10. How soap removes oily dirt when you wash your hands.** Soap cleans by acting as an emulsifier. During washing, soap molecules arrange themselves around oily dirt particles so that the hydrophilic side faces the water and the hydrophobic side attaches to
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