The cation exchange capacity is most closely associated with ________.
A) sand
B) silt
C) color
D) regolith
E) colloids

Question

Quizplus · Accepted Answer

Cation exchange capacity (CEC) is the ability of soil colloids to attract and hold positively charged ions (cations) such as calcium, magnesium, potassium, and sodium. Colloids, such as clay particles and organic matter, have a high surface area and negative charge, which allows them to attract and hold cations through electrostatic forces. Therefore, the cation exchange capacity is most closely associated with colloids in the soil.

The Cation Exchange Capacity Is Most Closely Associated with ________