Question

question 15 of 25
why does water roll off a persons skin when the person gets out of a swimming pool?
a. because water is full of hydrogen ions
b. because the skin is very smooth
c. because water only sticks to other water molecules
d. because the skin contains nonpolar lipid molecules

Explanation:

The skin has non - polar lipid molecules. Water is a polar molecule. Non - polar and polar substances do not mix well due to differences in their intermolecular forces. So water rolls off instead of being absorbed or adhering strongly.

Answer:

D. Because the skin contains nonpolar lipid molecules