What does adsorption describe?

What does adsorption describe?

• A. Dissolving in water
• B. Turning into vapor
• C. Raising pH
• D. Binding to soil

Answer: (D)

Adsorption is the process by which a substance adheres to the surface of a solid. In soils, this means nutrients or contaminants attach to the surfaces of soil particles like clay minerals and organic matter rather than dissolving into the water. This surface binding is why adsorption is described as binding to soil. Dissolving in water would be dissolution, turning into vapor is volatilization, and raising pH is a change in acidity, not a surface attachment. Understanding adsorption helps explain why some chemicals move slowly through soil: when they are bound to particle surfaces they become less mobile, though they can desorb under certain conditions.

Adsorption is the process by which a substance adheres to the surface of a solid. In soils, this means nutrients or contaminants attach to the surfaces of soil particles like clay minerals and organic matter rather than dissolving into the water. This surface binding is why adsorption is described as binding to soil. Dissolving in water would be dissolution, turning into vapor is volatilization, and raising pH is a change in acidity, not a surface attachment. Understanding adsorption helps explain why some chemicals move slowly through soil: when they are bound to particle surfaces they become less mobile, though they can desorb under certain conditions.