Texas Barber License Practice Examination

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Prepare for the Texas Barber License Examination with our comprehensive practice tests. Study smart with flashcards, multiple choice questions, hints, and explanations.

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The head of a surfactant molecule attracts ________.

Water
Oil
Dirt
Air

The correct answer is: Water

Surfactant molecules are composed of hydrophilic (water-attracting) and hydrophobic (water-repelling) properties. The head of a surfactant molecule is hydrophilic, meaning it is attracted to water molecules. This allows the surfactant molecule to break up or disperse substances such as oil and dirt, which are typically hydrophobic and have difficulty mixing with water. Air does not have the same properties as water, thus surfactant molecules are not attracted to it.