In the soil, which of the separates are associated with significant chemical activity in soil?
A) sand
B) silt
C) clay
D) aluminum
E) radium

Question

Quizplus · Accepted Answer

Clay particles have a large surface area and a negative charge, which enable them to hold onto and exchange positively charged ions such as nutrients and water. This makes them critically important for chemical activity in the soil. Sand and silt have smaller surface areas and do not have significant chemical activity. Aluminum also has chemical activity but is not a soil particle; it is commonly found as an ion in the soil solution. Radium is a naturally occurring radioactive element and not relevant to soil chemistry.

In the Soil, Which of the Separates Are Associated with Significant