https://en.wikipedia.org/wiki/Soil

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support ... Soil is also commonly referred to as earth or dirt; some scientific definitions distinguish dirt from soil by restricting ..... The mineralogical and chemical composition of the primary bedrock material, its physical features, including ...

http://organiclifestyles.tamu.edu/soilbasics/soilchemical.html

Eight chemical elements comprise the majority of the mineral matter in soils. ... 10 % of the soil mass by weight, has a great influence on soil chemical properties.

https://www.cheapvegetablegardener.com/molecule-composition-of-dirt/

This entry was posted 6 years ago and is filed under chemistry, dirt, soil composition. You can follow any responses to this entry through the RSS 2.0 feed .

https://shop.sciencefirst.com/environmental-kits/7051-chemical-composition-of-soil.html

Permits students to perform chemical determinations on locally derived soils to determine percentage of water, organic content, pH, and the presence of calcium,  ...

http://www.highplainsgardening.com/soil/chemical-composition

One of the three components of balanced soil is the chemical composition. For chemically balanced soil, the essential elements, both macronutrients and ...

https://www.regenerative.com/magazine/eight-chemical-elements-soil

The availability of chemical elements will vary according to the conditions acting on your permaculture plot, such as the soil composition, the amount of rainfall, ...

https://articles.extension.org/pages/54401/basic-soil-components

Jan 21, 2015 ... Clays have a large surface area, which is important for soil chemistry and water- holding capacity. Additionally, negative and neutral charges ...

https://webapp1.dlib.indiana.edu/virtual_disk_library/index.cgi/4928836/FID1596/html/envicond/soil/slform.htm

The elemental composition of SOM includes carbon, oxygen, hydrogen, nitrogen, ... A soil profile is a physical and chemical description of the layers (called ...

https://www.soils4teachers.org/chemistry

When soils and minerals weather over time, the chemical composition of soil also changes. However, nothing changes the chemistry of soils faster than humans ...

https://www.nrcs.usda.gov/wps/portal/nrcs/detail/nj/home/?cid=nrcs141p2_018993

Jan 30, 2014 ... Soil “horizons” are discrete layers that make up a soil profile. They are typically parallel with the ground surface. In some soils, they show ...