Chemist 1 Interview Questions and Answers

Brightness of a material refers to its ability to reflect light or emit light.

• Brightness can be measured using instruments like spectrophotometers or colorimeters.

• Materials with high reflectance or luminescence are considered bright.

• Factors affecting brightness include surface texture, color, and composition.

• Examples of bright materials include polished metals, fluorescent dyes, and phosphorescent pigments.

The whiteness of a material refers to its brightness and color purity.

• Whiteness is often measured using a whiteness index or a colorimeter.

• Factors affecting whiteness include the composition of the material, surface finish, and presence of impurities.

• Examples of materials with high whiteness include titanium dioxide and certain types of paper.

• Whiteness is important in industries such as cosmetics, textiles, and food processing.