Which statement correctly distinguishes Apparent Color from True Color?

Which statement correctly distinguishes Apparent Color from True Color?

• A. Apparent Color includes dissolved and suspended materials
• B. True Color includes dissolved and suspended materials
• C. Apparent Color includes only dissolved materials
• D. Color distinctions are unrelated to solution content

Answer: (A)

When you look at color in a water sample, you must separate colors caused by dissolved substances from those caused by suspended matter. Apparent Color is what you see in the unfiltered sample, so it includes both dissolved materials that color the water and any suspended or colloidal particles that add to the color by scattering light. True Color, on the other hand, reflects only the color contributed by the dissolved substances after removing suspended solids by filtration. So the statement that Apparent Color includes dissolved and suspended materials correctly captures what is observed in an unfiltered sample. The other ideas—that True Color includes suspended materials, that Apparent Color is limited to dissolved materials, or that color is unrelated to what’s in the solution—don’t align with how these measurements are defined.

When you look at color in a water sample, you must separate colors caused by dissolved substances from those caused by suspended matter. Apparent Color is what you see in the unfiltered sample, so it includes both dissolved materials that color the water and any suspended or colloidal particles that add to the color by scattering light. True Color, on the other hand, reflects only the color contributed by the dissolved substances after removing suspended solids by filtration.

So the statement that Apparent Color includes dissolved and suspended materials correctly captures what is observed in an unfiltered sample. The other ideas—that True Color includes suspended materials, that Apparent Color is limited to dissolved materials, or that color is unrelated to what’s in the solution—don’t align with how these measurements are defined.