Return to Soils homepage 1. Which property of soil colloids can result from a magnesium ion appearing in the crystal where normally an aluminum occurs. CaSO 4 15. The tetrahedron is a basic building unit in clay crystals.
Soil colloids fit the definition of an acid when calcium is replaced by hydrogen.
True b. False, made true by changing calcium to potassium c. False, made true by changing hydrogen to aluminum d. False, made true by exchanging calcium and hydrogen in the sentence.