Geochemistry

•  Atom

  The atom is a basic unit of matter consisting of a dense, central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons (except in the case of hydrogen-1, which is the only stable nuclide with no neutron). The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other, forming a molecule.

  

  47.4%
  

  21.1%
  

  31.6%
  
•  Analytical chemistry

  Analytical chemistry is the study of the chemical composition of natural and artificial materials. Properties studied in analytical chemistry include geometric features such as molecular morphologies and distributions of species, as well as features such as composition and species identity. Unlike the sub disciplines inorganic chemistry and organic chemistry, analytical chemistry is not restricted to any particular type of chemical compound or reaction.

  

  20.0%
  

  30.0%
  

  50.0%
  
•  Biochemistry

  Biochemistry is the study of the chemical processes in living organisms. It deals with the structure and function of cellular components such as proteins, carbohydrates, lipids, nucleic acids and other biomolecules. Among the vast number of different biomolecules, many are complex and large molecules, which are composed of similar repeating subunits. Each class of polymeric biomolecule has a different set of subunit types.

  

  100.0%
  

  0.0%
  

  0.0%
  
•  Chemistry

  Chemistry is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.

  

  100.0%
  

  0.0%
  

  0.0%
  
•  Chemical element

  A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. The term is also used to refer to a pure chemical substance composed of atoms with the same number of protons. Common examples of elements are iron, copper, silver, gold, hydrogen, carbon, nitrogen, and oxygen. In total, 118 elements have been observed as of March 2010, of which 94 occur naturally on Earth.

  

  50.0%
  

  0.0%
  

  50.0%
  
•  Chemical reaction

  A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Chemical reactions are studied by chemists under a field of science called chemistry. Chemical reactions can be either spontaneous, requiring no input of energy, or non-spontaneous, often coming about only after the input of some type of energy, viz. heat, light or electricity.

  

  50.0%
  

  0.0%
  

  50.0%
  
•  Inorganic chemistry

  Inorganic chemistry is the branch of chemistry concerned with the properties and behavior of inorganic compounds. This field covers all chemical compounds except the myriad organic compounds (carbon based compounds, usually containing C-H bonds), which are the subjects of organic chemistry. The distinction between the two disciplines is far from absolute, and there is much overlap, most importantly in the sub-discipline of organometallic chemistry.

  

  0.0%
  

  0.0%
  

  0.0%
  
•  Molecule

  A molecule is defined as an electrically neutral group of at least two atoms in a definite arrangement held together by very strong chemical bonds. Molecules are distinguished from polyatomic ions in this strict sense. In organic chemistry and biochemistry, the term molecule is used less strictly and also is applied to charged organic molecules and biomolecules. In the kinetic theory of gases, the term molecule is often used for any gaseous particle regardless of its composition.

  

  14.3%
  

  42.9%
  

  42.9%
  
•  Organic chemistry

  Organic Chemistry is a discipline within chemistry that involves the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of carbon based compounds, hydrocarbons, and their derivatives. These compounds may contain any number of other elements, including hydrogen, nitrogen, oxygen, the halogens as well as phosphorus, silicon and sulfur.

  

  0.0%
  

  0.0%
  

  100.0%
  
•  Periodic table

  The periodic table of the chemical elements (also Mendeleev's table, periodic table of the elements or just periodic table) is a tabular display of the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869, who intended the table to illustrate recurring ("periodic") trends in the properties of the elements.

  

  28.6%
  

  71.4%
  

  0.0%
  

• Chemistry by likeorhate
• Earth sciences by likeorhate
• Geochemistry by likeorhate

Register now, and make your vote count more!

•  Lorenzo, Texas

  Lorenzo is a city in Crosby County, Texas, United States. As of the 2000 census, the city population was 1,372. It is part of the Lubbock Metropolitan Statistical Area.

  

  0.0%
  

  0.0%
  

  0.0%
  
•  Isaiah Berlin

  Sir Isaiah Berlin OM (6 June 1909 – 5 November 1997) was a Russian-British philosopher and historian of ideas, regarded as one of the leading thinkers of the 20th century, and as the dominant liberal scholar of his generation. He excelled as an essayist, conversationalist and raconteur; and as a brilliant lecturer who improvised, rapidly and spontaneously, richly allusive and coherently structured material.

  

  100.0%
  

  0.0%
  

  0.0%
  
•  Beatifications of Pope Pius XII

  Beatifications of Pope Pius XII includes all persons beatified during the pontificate of Pope Pius XII. (Individual text descriptions to be added)

  

  0.0%
  

  0.0%
  

  0.0%
  
• Novaya Zemlya by likeorhate
•  Sunset Park (Soundtrack)

  

  62.5%
  

  18.8%
  

  18.8%