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SWS Exam 2 Review Questions and Answers
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SWS Exam 2 Review Questions and Answers An example of an uncharged aluminosilicate mineral is talc - CORRECT ANSWER-True Which of the following would be most preferred at charged silicate clay surfaces all else being equal? A. Na+ B. Mg2+ C. Ca2+ D. Al3+ - CORRECT ANSWER-Al...

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  • August 2, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • sws exam 2 review questions and answers
  • an example of an uncharged aluminosilicate miner
  • isomorphous substitution typically results in a

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SWS Exam 2 Review Questions and
Answers
An example of an uncharged aluminosilicate mineral is talc - CORRECT ANSWER-True

Which of the following would be most preferred at charged silicate clay surfaces all else
being equal?
A. Na+
B. Mg2+
C. Ca2+
D. Al3+ - CORRECT ANSWER-Al3+

Cations
A. are positively charged
b. obtain charge by gaining electrons
c. are attracted to charged soil silicate clay mineral surfaces - CORRECT ANSWER-A
and C

When water molecules surround a cation in a solution, the oxygen end of the water
molecule will orient toward the cation. - CORRECT ANSWER-True

The units used to express cation exchange capacity are - CORRECT ANSWER-
cmolc/kg

Isomorphous substitution typically results in a net negative charge on soil clay minerals
- CORRECT ANSWER-True

A chemical element that has acquired an electrical charge by losing an electron during a
reaction is called a/an - CORRECT ANSWER-cation and ion

Small cations are attracted to colloid surfaces more strongly than large cations -
CORRECT ANSWER-True

Highly charged cations are attracted to soil colloid surfaces more strongly than weakly
charged cations - CORRECT ANSWER-True

Negative charge on soil minerals is satisfied by anions from soil solution - CORRECT
ANSWER-False

Isomorphous substitution typically results in a net negative charge on soil clay minerals.
- CORRECT ANSWER-True

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