NRES 251- Exam 2

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15 Terms

1
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source of soil ions

additions, transformations, and translocation

2
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wher are ions in soil

ionic double layer

  • internal and external surfaces

solution

  • root uptake

  • leached

3
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what is a soil colloid

  • solid soil particles with diameters from 0.01 to 10 um

  • range from clay to fine silt in size

  • usually heterogenous mixture of inorganic and organic materials

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what is the colloid high surface area range

5 to 1000 m2/g

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what is the colloid high surface charge range

+20 to -200 cmol+/kg

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types of colloids

  • crystalline silicate clays

  • non-crystalline silicate clays

  • Al/Fe oxides

  • organic

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what are crystalline silicate clays dominated by/building blocks of

  • dominated by silicon

  • building blocks of phyllosilicates

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