Arkansas State Barber Practice Exam

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The portion of the shampoo molecule that attracts water and repels dirt is the:

Tail
Nucleus
Head
Arm

The correct answer is: Head

The correct answer is C. In a shampoo molecule, the portion that attracts water and repels dirt is known as the "head." This head portion is typically hydrophilic, meaning it has an affinity for water, allowing the shampoo to mix with water and wash away dirt and oils from the hair. The tail portion is usually hydrophobic, repelling water but attracting oils and dirt, aiding in the cleansing process. Therefore, the head of the shampoo molecule plays a crucial role in ensuring effective cleaning during the shampooing process.