2.3.3 Water: Hydrophilic and Hydrophobic Substance Flashcards
1
Q
hydrophobic
A
- nonpolar substances because they have no charges and can’t interact and hydrogen-bond with water molecules
2
Q
hydrophilic
A
- polar and ionic molecules because they do have charges (or slight charges) and can interact with water molecules
3
Q
detergent
A
- a molecule that can mix polar and nonpolar molecules together because it has polar and nonpolar ends that can interact with both substances.
4
Q
oils
A
- nonpolar because carbon and hydrogen have similar
electronegativities, and the electrons are shared equally between the two. No partial charges result.
5
Q
A molecule that is able to mix polar and nonpolar molecules together because it has polar and nonpolar ends that can interact with both substances is called
A
- a detergent
6
Q
Hydrophobic interactions
A
- hold nonpolar molecules together
7
Q
True or false?
Fats do not mix with water because they are polar.
A
- false
8
Q
A polar solvent would easily dissolve which of the following?
A
- NaCl
9
Q
Hydrophilic interactions
A
- play a role in the solubility of a compound in water
10
Q
A hydrophobic compound would dissolve easily in
A
- corn oil
11
Q
In water, spheres of hydration form around
A
- polar molecules and ions
12
Q
Lecithin is a natural detergent because of what molecular property?
A
- It has hydrophobic and hydrophilic regions.
