Washington Barber License Practice Exam

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Prepare for the Washington Barber License Exam with flashcards and multiple-choice questions, including hints and explanations. Boost your confidence for your exam day!

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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.