Match the following terms with their definitions.

Terms:
1. Pigment
2. Becke line
3. Backscatter
4. Refractive index

Definitions:
A) A colored material added to glass or paint
B) A halo
C) Fragments of glass left on the entrance side of an impact
D) A measure of how light bends as it passes from one substance to another

In chemistry, pigments are molecules that absorb specific light wavelengths to produce color. They are applied on surfaces and differ from dyes in their use.

Explanation:

In chemistry, a pigment is a molecule capable of absorbing specific wavelengths of light and reflecting others, resulting in its coloration. This process is distinct from luminescence forms like fluorescence. Pigments can be distinguished from dyes by their application on surfaces with a binding material rather than absorption into the material.

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