Arizona State Board Nail Technology Practice Exam

The term ________ refers to the amount of pigment concentration in a gel making it difficult to see through.

1. opacity

2. viscosity

3. transparency

4. fluidity

The correct answer is: opacity

The term "opacity" precisely refers to the degree to which a substance is opaque or not transparent. When discussing gel products in the context of nail technology, opacity describes the concentration of pigments within the gel. A higher opacity means that the gel is more pigmented and therefore less transparent or harder to see through. This characteristic is particularly important in nail design as it affects the overall appearance and color impact of the gel when applied. Viscosity, on the other hand, relates to the thickness or resistance to flow of a liquid. Transparency directly describes how clear a substance is, which would be the opposite of opacity. Fluidity refers to the ability of a substance to flow easily, which is also distinct from the concept of how much light can pass through a gel. Hence, in the context of this question, "opacity" is the correct term that encapsulates the concept of pigment concentration affecting visibility through the gel.