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Introduction to Soil Chemistry
Intro to Soil Chemistry
40
Chemistry
Undergraduate 4
01/06/2017

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Cards

Term
soil can be red due to...
Definition
high Fe
Term
weathering rind
Definition
layer on the surface of a rock where soil starts to form
Term
these components provides structure to the soil
Definition
the inorganic components
Term
the 1nm thick films on the surface of water are caused by...
Definition
reduced Fe
Term
the bonding that occurs when minerals are packed together
Definition
lots of ionic bonding
Term
something that can cause red and white stripes in soil
Definition
pale stripes where soil has lost Fe due to leaching and red stripes where Fe has reprecipitated
Term
some stuff that could be in the black layer of a soil
Definition
organic matter and some stuff that leached there
Term
Chemistry in the natural environment is basically one big...
Definition
acid-base rxn
Term
Stuff in the chemistry of the environment cycles between the...
Definition
-atmosphere
-hydrosphere
-lithosphere
-pedoshpere
-biosphere
Term
Some chemical components of the atmosphere
Definition
-acids -redox agents -CO2 -NOX -SO2 -O2
Term
Some chemical components of the hydrosphere
Definition
-soils
-groundwaters
-rivers
-oceans
Term
Some chemical components of the lithosphere
Definition
-bases
-rock
-carbonates
-silicates
Term
Some chemical components of the pedosphere
Definition
soil
Term
Some chemical components of the biosphere
Definition
-plants
-animals
-microbes
Term
the type of systems soils are
Definition
open biogeochemical systems
Term
what happens with products and reactants in soils?
Definition
lose products and gain reactants
Term
depiction of the matter and energy transfer in soil
Definition
[image]
Term
Soil
Definition
Porous media created at land surface by weathering pressures derived from biological, geological and hydrologic processes
Term
Some important chemical characteristics of soil
Definition
-Multiphase
-Multicomponent
-Open
-Biogeochemical
Term
how soil is multiphase
Definition
has solids, liquids, and gases
Term
how soil is multicomponent
Definition
all phases are mixtures
Term
how soil is open
Definition
exchange matter and energy with surroundings (hydro-, bio-, litho- spheres)
Term
how soil is biogeochemical
Definition
biotic and abiotic reactions occur in the soil
Term
Some things in the atmosphere that can go to the soil
Definition
-H2O -O2 -CO2 -NO2 -SO2
Term
Some solutes that can go from soil to rivers
Definition
-H2O -HCO3- -M2+ -Si(OH)40 -Org. -NO3- -SO42-
Term
Some NOM that can go into the soil
Definition
Reduced C compounds (e-, H+, complexing ligands)
Term
Soil phases by volume
Definition
[image]
Term
The most abundant elements in soil
Definition
-O
-Si
-Al
-Fe
-Ca
-C
Term
Trace element
Definition
mass concentration in solid phase ≤ 100 mg / kg (100 ppm)
Term
Some trace elements in soil
Definition
-Li
-Be
-B
-Cl
-Sc
-V
-Cr
-Co
-Ni
-Cu
-Cs
Term
The elemental composition of soil is relative to...
Definition
crustal rock (parent material)
Term
Weathering produces ______ in soils
Definition
enrichments and depletions
Term
when enrichment occurs
Definition
Enrichment occurs at enrichment factor (EF) > 2
Term
when depletion occurs
Definition
depletion occurs at EF , 0.5
Term
the compounds that are thought to be ionic
Definition
Those that are more than 50% ionic
Term
The type of bond is classed by...
Definition
% ionic bond character and the ΔEN
Term
Chart that shows types of bonds based on % ionic bond character and ΔEN
Definition
[image]
Term
Depiction of a cation and its solvation shells
Definition
[image]
Term
Primary hydration number
Definition
the number of water molecules in the primary solvation shell
Term
the water molecules that are hardest to remove from a dissolved ion
Definition
the ones in the primary solvation shell
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