Question

Which statement about surfactant molecules is correct?

A) The head is hydrophilic and the tail is lipophilic.

B) The head is lipophilic and the tail is hydrophilic.

C) The head and tail are both hydrophilic

D)The head and tail are both lipophilic.

Answer 1

Answer: c

Explanation: because the heads are hydrophobic and the tails are hydrophilic.estherefore they surfactant molecules containd both a water-insoluble(or oil-soluble)component.

Answer 2

Soaps or surfactants are molecules that contain two ends, hydrophobic (fear from water) and hydrophilic (love for water).

• The hydrophilic part contains sodium ions (also known as ionic end) that readily dissolve in water. It acts as the head which pulls the oil (tail end) out of the clothes.

• The hydrophobic part interacts with the hydrocarbons (or oil) and will not dissolve in water. It acts as the tail which carries the dirt with itself.

As the tail interacts with the oil and thus, is considered lipophilic (love for oil/fats).

Therefore, we can conclude that the option that affirms the head is hydrophilic and the tail is lipophilic is correct as the head shows love for water and the tail shows love for oils.

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