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- Chemical_law abstract "Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, and that energy and mass are related; a concept which becomes important in nuclear chemistry. Conservation of energy leads to the important concepts of equilibrium, thermodynamics, and kinetics.Additional laws of chemistry elaborate on the law of conservation of mass. Joseph Proust's law of definite composition says that pure chemicals are composed of elements in a definite formulation; we now know that the structural arrangement of these elements is also important.Dalton's law of multiple proportions says that these chemicals will present themselves in proportions that are small whole numbers (i.e. 1:2 O:H in water); although in many systems (notably biomacromolecules and minerals) the ratios tend to require large numbers, and are frequently represented as a fraction. Such compounds are known as non-stoichiometric compoundsMore modern laws of chemistry define the relationship between energy and transformations. In equilibrium, molecules exist in mixture defined by the transformations possible on the timescale of the equilibrium, and are in a ratio defined by the intrinsic energy of the molecules—the lower the intrinsic energy, the more abundant the molecule. Transforming one structure to another requires the input of energy to cross an energy barrier; this can come from the intrinsic energy of the molecules themselves, or from an external source which will generally accelerate transformations. The higher the energy barrier, the slower the transformation occurs. There is a hypothetical intermediate, or transition structure, that corresponds to the structure at the top of the energy barrier. The Hammond-Leffler Postulate states that this structure looks most similar to the product or starting material which has intrinsic energy closest to that of the energy barrier. Stabilizing this hypothetical intermediate through chemical interaction is one way to achieve catalysis. All chemical processes are reversible (law of microscopic reversibility) although some processes have such an energy bias, they are essentially irreversible.".
- Chemical_law wikiPageID "3680464".
- Chemical_law wikiPageLength "2696".
- Chemical_law wikiPageOutDegree "20".
- Chemical_law wikiPageRevisionID "581462951".
- Chemical_law wikiPageWikiLink Albert_Einstein.
- Chemical_law wikiPageWikiLink Catalysis.
- Chemical_law wikiPageWikiLink Category:History_of_chemistry.
- Chemical_law wikiPageWikiLink Chemical_equilibrium.
- Chemical_law wikiPageWikiLink Chemical_kinetics.
- Chemical_law wikiPageWikiLink Chemical_reaction.
- Chemical_law wikiPageWikiLink Chemistry.
- Chemical_law wikiPageWikiLink Conservation_of_energy.
- Chemical_law wikiPageWikiLink Conservation_of_mass.
- Chemical_law wikiPageWikiLink Einstein.
- Chemical_law wikiPageWikiLink Energy.
- Chemical_law wikiPageWikiLink Hammond-Leffler_Postulate.
- Chemical_law wikiPageWikiLink Hammonds_postulate.
- Chemical_law wikiPageWikiLink John_Dalton.
- Chemical_law wikiPageWikiLink Joseph_Proust.
- Chemical_law wikiPageWikiLink Law_of_conservation_of_mass.
- Chemical_law wikiPageWikiLink Law_of_definite_composition.
- Chemical_law wikiPageWikiLink Law_of_definite_proportions.
- Chemical_law wikiPageWikiLink Law_of_multiple_proportions.
- Chemical_law wikiPageWikiLink Microscopic_reversibility.
- Chemical_law wikiPageWikiLink Nuclear_chemistry.
- Chemical_law wikiPageWikiLink Physical_law.
- Chemical_law wikiPageWikiLink Stoichiometry.
- Chemical_law wikiPageWikiLink Thermodynamics.
- Chemical_law wikiPageWikiLinkText "Chemical law".
- Chemical_law wikiPageWikiLinkText "laws".
- Chemical_law hasPhotoCollection Chemical_law.
- Chemical_law wikiPageUsesTemplate Template:Unreferenced.
- Chemical_law subject Category:History_of_chemistry.
- Chemical_law type Article.
- Chemical_law type Article.
- Chemical_law comment "Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, and that energy and mass are related; a concept which becomes important in nuclear chemistry.".
- Chemical_law label "Chemical law".
- Chemical_law sameAs Keemiaseadused.
- Chemical_law sameAs Hukum_kimia.
- Chemical_law sameAs Leggi_fondamentali_ponderali.
- Chemical_law sameAs Kjemiske_lover.
- Chemical_law sameAs m.09v32d.
- Chemical_law sameAs රසායනික_නීතිය.
- Chemical_law sameAs Chemický_zákon.
- Chemical_law sameAs Kemijski_zakon.
- Chemical_law sameAs Kimya_kanunları.
- Chemical_law sameAs Q36382.
- Chemical_law sameAs Q36382.
- Chemical_law wasDerivedFrom Chemical_law?oldid=581462951.
- Chemical_law isPrimaryTopicOf Chemical_law.