Question

in an oil spill, why does the oil not mix with the seawater?
lipids are hydrophobic.
lipids are hydrophilic.
lipids are saturated.
lipids are unsaturated.

Explanation:

Oils are lipids. Hydrophobic substances repel water. Since oils (lipids) are hydrophobic, they do not mix with water like seawater. Hydrophilic substances would mix with water, and saturation of lipids is related to their chemical - bond structure and not their water - mixing property.

Answer:

Lipids are hydrophobic.