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Unformatted text preview: 4. a. (10%) If Mg +2 substitutes for Al +3 in the octahedral sheet, how much net layer charge do you expect? (circle the correct answer) 3 2 1-1-2-3 b. (10%) What about ferric (Fe 3+ ) ion substituting for the aluminum (Al 3+ ) ion? 3 2 1-1-2-3 5. (10%) As weathering proceeds in a given volume of material (e.g., 1 m 3 ), particle size ____________ resulting in ___________ surface area for that specified volume. a. increases, increased b. decreases, decreased c. decreases, increased d. there is no relationship between particle size and surface area of minerals...
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- Spring '10