Difference between organic and inorganic

I have source 3 definitions as below:

1     Simplistically (and probably not accurately) put, healthy plants depend on the soil micro-organisms consuming the organic nutrients in the soil then excreting non-organic food which the roots can then uptake, thus feeding the plant.  The roots of the plant cannot uptake organic matter, only inorganic matter.

Source:   http://chemistry.about.com/od/branchesofchemistry/f/What-Is-The-Difference-Between-Organic-And-Inorganic.htm

2     source:     http://www.shmoop.com/biomolecules/organic-inorganic-molecules.html

Molecules can be either organic or inorganic. No, we are not talking about pesticide-free, non-genetically modified, free-range molecules. In chemistry terms, organic means that a molecule has a carbon backbone, with some hydrogens thrown in for good measure. Living creatures are made of various kinds of organic compounds. Inorganic molecules are composed of other elements. They can contain hydrogen or carbon, but if they have both, they are organic. Picky, picky.

You may be wondering why carbon plays such a big role in life. Well, wonder no more! The reason is that carbon has 4 electrons in its outer shell, but, deep down, it really wants 8 electrons instead. With two electrons for every pair, the 8 electrons can form up to 4 single bonds, or some combination of single, double, and triple bonds. Carbon is extremely versatile. If you can act, sing, dance, and play the violin with your toes, you are way more likely to find work than someone who can only do one of those things. Not that being able to play the violin with your toes is an extremely marketable skill or anything…

Think of carbon as the jack-of-all-trades. Carbon’s potential to form many kinds and combinations of bonds with many different atoms gives rise to all sorts of molecules of varying shapes and sizes. Living organisms have definitely taken advantage of this ability, which might explain the similarity between the words “organic” and “organism.”


3     source:   http://www.softschools.com/difference/organic_versus_inorganic_compounds/157/

There are chief differences between organic and inorganic compounds. While both types of compounds make up the basis of chemistry, the two types are rather different. The main difference is in the presence of a carbon atom; organic compounds will contain a carbon atom (and often a hydrogen atom, to form hydrocarbons), while almost all inorganic compounds do not contain either of those two atoms.

While most inorganic compounds do not contain carbon, there are a few that do. Carbon monoxide and carbon dioxide, for example, each contain carbon atoms, but the amount is not large enough to form strong bonds with the oxygen present in the molecule. Due to the small amount of carbon and the weak bonds it forms, scientists have long classified those molecules as inorganic, but this has led some in the scientific community to declare the need for a better classification system for compounds.

Another important distinction between organic and inorganic compounds is the type of molecule and its association with living things. Organic compounds will include things like the nucleic acids, found in DNA, lipids and fatty acids found in the cells of living organisms, proteins and enzymes that are necessary for cellular processes to take place, and more. Meanwhile, inorganic compounds include the salts, metals, and other elemental compounds.

1. C12H22O11 – Sucrose, better known as the sugar we use at home, is an important organic compound that contains not only carbon and hydrogen, but contains them in abundance and in ratios greater than the oxygen present.

2. CH4 – Also known by the more common name methane, this carbon and hydrogen based organic compound is a widely recognized waste product of living things.

3. C55H72O5N4Mg – Better known among researchers as chlorophyll-a, this component found in green plants not only is high in carbon and hydrogen ratios, but is also a chief factor in the process of photosynthesis in plants.

4. (NH4)2S – Despite the presence of hydrogen atoms in this compound, the lack of a carbon atom and the resulting weak bonds that are formed between the atoms makes ammonium sulfide an inorganic compound.

5. CaCl2 – Calcium chloride is an inorganic compound with a variety of uses, but its lack of either a carbon atom, a hydrogen atom, or both means it is classified as an inorganic compound.

Question: What Is the Difference Between Organic and Inorganic?

Answer: The primary difference between organic compounds and inorganic compounds is that organic compounds always contain carbon while most inorganic compounds do not contain carbon. Also, almost all organic compounds contain carbon-hydrogen or C-H bonds.

Examples of Organic Compounds or Molecules

Molecules associated with living organisms are organic. These include nucleic acids, fats, sugars, proteins, enzymes and many fuels.

  • DNA
  • table sugar or sucrose, C12H22O11
  • benzene, C6H6
  • methane, CH4

Examples of Inorganic Compounds

Inorganics include salts, metals, substances made from single elements and any other compounds that don’t contain carbon bonded to hydrogen.

  • table salt or sodium chloride, NaCl
  • carbon dioxide, CO2
  • diamond (pure carbon)

Organic Compounds Without C-H Bonds

There are few organic compounds that don’t contain carbon-hydrogen bonds. Examples of these exceptions include:

  • carbon tetrachloride (CCl4)
  • urea [CO(NH2)2]


Source:     http://www.freedrinkingwater.com/water-education3/25-water-organic-inorganic-minerals.htm

Here is a brief overview of the differences between these two:

Organic minerals– these are once living, or are living and can bring life to cells. These contain carbon, and their electrons spin clockwise, just like those of the human body. Additionally, these cells can form an ionic bond with the body and can easily break down into materials to help with bodily function, such as tissue repair.

Inorganic materials– these were never living, without carbon and cannot bring life to cells. The body treats these metals like toxins and are tightly held together; they cannot be easily broken down. And, their electrons spin counterclockwise, out of sync with the rest of the body.