NIC Nail Technician Written ExamScientific ConceptsHard
A nail technician is using a chemical product that has a pH of 3. What does this pH value indicate about the product?
- AIt is weakly alkaline.
- BIt is neutral.
- CIt is strongly alkaline.
- DIt is strongly acidic.
Show answer & explanationAnswer & explanation
Correct answer: D. It is strongly acidic.
The pH scale ranges from 0 to 14. A pH of 7 is neutral. Values below 7 are acidic, and values above 7 are alkaline (or basic). A pH of 3 is significantly below 7, indicating a strongly acidic product. Understanding pH is crucial for product selection and client safety.
Why the other options are wrong
- A. Weakly alkaline products would have a pH slightly above 7, but below 10-11.
- B. A neutral product has a pH of exactly 7.
- C. Strongly alkaline products have a pH value closer to 14.
pH Scale
A logarithmic scale (0-14) used to specify the acidity or alkalinity of a substance.
- pH 7 is neutral.
- pH < 7 is acidic (lower numbers = stronger acid).
- pH > 7 is alkaline/basic (higher numbers = stronger alkali).
Memory trick: Acid below 7, alkaline above, neutral at 7, that's the pH love.