The process of a substance binding to surfaces such as soil particles is called?

The process of a substance binding to surfaces such as soil particles is called?

• A. Adsorption
• B. Toxicity
• C. Climate
• D. Weed

Answer: (A)

Adsorption is the process of a substance sticking to surfaces, such as soil particle surfaces, rather than entering the interior of the particles. In soil, chemicals like pesticides bind to clay minerals and organic matter through surface forces, which can include electrostatic interactions and van der Waals forces. This surface binding reduces the chemical’s mobility with water, influencing how far it can move through the soil and how long it stays available in the environment. Soil properties like higher clay content and more organic matter typically increase adsorption because they provide more surface area and binding sites, while pH and ionic strength can modify those interactions. The other terms don’t describe this surface-binding behavior: toxicity refers to harmful effects on organisms, climate is weather conditions, and a weed is an unwanted plant.

Adsorption is the process of a substance sticking to surfaces, such as soil particle surfaces, rather than entering the interior of the particles. In soil, chemicals like pesticides bind to clay minerals and organic matter through surface forces, which can include electrostatic interactions and van der Waals forces. This surface binding reduces the chemical’s mobility with water, influencing how far it can move through the soil and how long it stays available in the environment. Soil properties like higher clay content and more organic matter typically increase adsorption because they provide more surface area and binding sites, while pH and ionic strength can modify those interactions. The other terms don’t describe this surface-binding behavior: toxicity refers to harmful effects on organisms, climate is weather conditions, and a weed is an unwanted plant.