Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Chemical_element> ?p ?o }
- Chemical_element abstract "A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. There are 80 elements that have at least one stable isotope and 38 that have exclusively radioactive isotopes, which decay over time into other elements. Iron is the most abundant element (by mass) making up the Earth, while oxygen is the most common element in the crust of the earth.Chemical elements constitute all of the ordinary matter of the universe. However astronomical observations suggest that ordinary observable matter is only approximately 15% of the matter in the universe: the remainder is dark matter, the composition of which is unknown, but it is not composed of chemical elements.The two lightest elements, hydrogen and helium were mostly formed in the Big Bang and are the most common elements in the universe. The next three elements (lithium, beryllium and boron) were formed mostly by cosmic ray spallation, and are thus more rare than those that follow. Formation of elements with from six to twenty six protons occurred and continues to occur in main sequence stars via stellar nucleosynthesis. The high abundance of oxygen, silicon, and iron on Earth reflects their common production in such stars. Elements with greater than twenty-six protons are formed by supernova nucleosynthesis in supernovae, which, when they explode, blast these elements far into space as planetary nebulae, where they may become incorporated into planets when they are formed.The term \"element\" is used for a kind of atoms with a given number of protons (regardless of whether they are or they are not ionized or chemically bonded, e.g. hydrogen in water) as well as for a pure chemical substance consisting of a single element (e.g. hydrogen gas). For the second meaning, the terms \"elementary substance\" and \"simple substance\" have been suggested, but they have not gained much acceptance in the English-language chemical literature, whereas in some other languages their equivalent is widely used (e.g. French corps simple, Russian простое вещество). One element can form multiple substances different by their structure; they are called allotropes of the element.When different elements are chemically combined, with the atoms held together by chemical bonds, they form chemical compounds. Only a minority of elements are found uncombined as relatively pure minerals. Among the more common of such \"native elements\" are copper, silver, gold, carbon (as coal, graphite, or diamonds), and sulfur. All but a few of the most inert elements, such as noble gases and noble metals, are usually found on Earth in chemically combined form, as chemical compounds. While about 32 of the chemical elements occur on Earth in native uncombined forms, most of these occur as mixtures. For example, atmospheric air is primarily a mixture of nitrogen, oxygen, and argon, and native solid elements occur in alloys, such as that of iron and nickel.The history of the discovery and use of the elements began with primitive human societies that found native elements like carbon, sulfur, copper and gold. Later civilizations extracted elemental copper, tin, lead and iron from their ores by smelting, using charcoal. Alchemists and chemists subsequently identified many more, with almost all of the naturally-occurring elements becoming known by 1900.The properties of the chemical elements are summarized on the periodic table, which organizes the elements by increasing atomic number into rows (\"periods\") in which the columns (\"groups\") share recurring (\"periodic\") physical and chemical properties. Save for unstable radioactive elements with short half-lives, all of the elements are available industrially, most of them in high degrees of purity.".
- Chemical_element thumbnail 14LaAc_periodic_table_IIb.jpg?width=300.
- Chemical_element wikiPageExternalLink periodicvideos.com.
- Chemical_element wikiPageID "5659".
- Chemical_element wikiPageLength "74817".
- Chemical_element wikiPageOutDegree "663".
- Chemical_element wikiPageRevisionID "706393451".
- Chemical_element wikiPageWikiLink Absolute_zero.
- Chemical_element wikiPageWikiLink Abundance_of_the_chemical_elements.
- Chemical_element wikiPageWikiLink Abundances_of_the_elements_(data_page).
- Chemical_element wikiPageWikiLink Actinide.
- Chemical_element wikiPageWikiLink Actinium.
- Chemical_element wikiPageWikiLink Adenosine_triphosphate.
- Chemical_element wikiPageWikiLink Aether_(classical_element).
- Chemical_element wikiPageWikiLink Age_of_the_universe.
- Chemical_element wikiPageWikiLink Agriculture.
- Chemical_element wikiPageWikiLink Air_(classical_element).
- Chemical_element wikiPageWikiLink Alchemy.
- Chemical_element wikiPageWikiLink Alkali_metal.
- Chemical_element wikiPageWikiLink Alkaline_earth_metal.
- Chemical_element wikiPageWikiLink Allotropy.
- Chemical_element wikiPageWikiLink Alpha_decay.
- Chemical_element wikiPageWikiLink Alpha_particle.
- Chemical_element wikiPageWikiLink Aluminium.
- Chemical_element wikiPageWikiLink Americium.
- Chemical_element wikiPageWikiLink Amorphous_carbon.
- Chemical_element wikiPageWikiLink Ancient_philosophy.
- Chemical_element wikiPageWikiLink Antimony.
- Chemical_element wikiPageWikiLink Antoine_Lavoisier.
- Chemical_element wikiPageWikiLink Arabic_numerals.
- Chemical_element wikiPageWikiLink Argon.
- Chemical_element wikiPageWikiLink Aristotle.
- Chemical_element wikiPageWikiLink Arsenic.
- Chemical_element wikiPageWikiLink Astatine.
- Chemical_element wikiPageWikiLink Astronomy.
- Chemical_element wikiPageWikiLink Atmosphere.
- Chemical_element wikiPageWikiLink Atom.
- Chemical_element wikiPageWikiLink Atomic_mass.
- Chemical_element wikiPageWikiLink Atomic_mass_unit.
- Chemical_element wikiPageWikiLink Atomic_nucleus.
- Chemical_element wikiPageWikiLink Atomic_number.
- Chemical_element wikiPageWikiLink Atomic_orbital.
- Chemical_element wikiPageWikiLink Barium.
- Chemical_element wikiPageWikiLink Berkelium.
- Chemical_element wikiPageWikiLink Beryllium.
- Chemical_element wikiPageWikiLink Beta_decay.
- Chemical_element wikiPageWikiLink Beta_particle.
- Chemical_element wikiPageWikiLink Big_Bang.
- Chemical_element wikiPageWikiLink Big_Bang_nucleosynthesis.
- Chemical_element wikiPageWikiLink Biology.
- Chemical_element wikiPageWikiLink Bismuth.
- Chemical_element wikiPageWikiLink Bismuth-209.
- Chemical_element wikiPageWikiLink Block_(periodic_table).
- Chemical_element wikiPageWikiLink Bohrium.
- Chemical_element wikiPageWikiLink Boiling_point.
- Chemical_element wikiPageWikiLink Boron.
- Chemical_element wikiPageWikiLink Bromine.
- Chemical_element wikiPageWikiLink Cadmium.
- Chemical_element wikiPageWikiLink Caesium.
- Chemical_element wikiPageWikiLink Calcium.
- Chemical_element wikiPageWikiLink Californium.
- Chemical_element wikiPageWikiLink Carbon.
- Chemical_element wikiPageWikiLink Carbon-12.
- Chemical_element wikiPageWikiLink Carbon-14.
- Chemical_element wikiPageWikiLink Carbon_nanotube.
- Chemical_element wikiPageWikiLink Category:Chemical_elements.
- Chemical_element wikiPageWikiLink Category:Chemistry.
- Chemical_element wikiPageWikiLink Cerium.
- Chemical_element wikiPageWikiLink Charcoal.
- Chemical_element wikiPageWikiLink Chemical_bond.
- Chemical_element wikiPageWikiLink Chemical_compound.
- Chemical_element wikiPageWikiLink Chemical_engineering.
- Chemical_element wikiPageWikiLink Chemical_property.
- Chemical_element wikiPageWikiLink Chemical_substance.
- Chemical_element wikiPageWikiLink Chemistry.
- Chemical_element wikiPageWikiLink Chlorine.
- Chemical_element wikiPageWikiLink Chlorophyll.
- Chemical_element wikiPageWikiLink Chromium.
- Chemical_element wikiPageWikiLink Chronology_of_the_universe.
- Chemical_element wikiPageWikiLink Classical_element.
- Chemical_element wikiPageWikiLink Cluster_decay.
- Chemical_element wikiPageWikiLink Coal.
- Chemical_element wikiPageWikiLink Cobalt.
- Chemical_element wikiPageWikiLink Composition_of_the_human_body.
- Chemical_element wikiPageWikiLink Copernicium.
- Chemical_element wikiPageWikiLink Copper.
- Chemical_element wikiPageWikiLink Cosmic_ray.
- Chemical_element wikiPageWikiLink Cosmic_ray_spallation.
- Chemical_element wikiPageWikiLink Cosmogenic_nuclide.
- Chemical_element wikiPageWikiLink Cosmos.
- Chemical_element wikiPageWikiLink Crust_(geology).
- Chemical_element wikiPageWikiLink Crystal.
- Chemical_element wikiPageWikiLink Cube.
- Chemical_element wikiPageWikiLink Cubic_crystal_system.
- Chemical_element wikiPageWikiLink Curium.
- Chemical_element wikiPageWikiLink Dark_energy.
- Chemical_element wikiPageWikiLink Dark_matter.
- Chemical_element wikiPageWikiLink Darmstadtium.
- Chemical_element wikiPageWikiLink Decay_product.
- Chemical_element wikiPageWikiLink Densities_of_the_elements_(data_page).