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- Atomic_theory abstract "In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the antiquated concept which held that matter could be divided into any arbitrarily small quantity. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning "indivisible". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called "indivisible atom" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term "elementary particles" to describe the 'indivisible', though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.".
- Atomic_theory thumbnail Helium_atom_QM.svg?width=300.
- Atomic_theory wikiPageExternalLink atomism.htm.
- Atomic_theory wikiPageExternalLink atomic_theory.html.
- Atomic_theory wikiPageID "2844".
- Atomic_theory wikiPageRevisionID "606573245".
- Atomic_theory align "right".
- Atomic_theory caption "The cathode rays were emitted from the cathode, sharpened to a beam by the slits, then deflected as they passed between the two electrified plates.".
- Atomic_theory direction "horizontal".
- Atomic_theory hasPhotoCollection Atomic_theory.
- Atomic_theory image "JJ Thomson Cathode Ray Tube 2.png".
- Atomic_theory image "JJ_Thomson_Crookes_Tube_Replica.jpg".
- Atomic_theory width "300".
- Atomic_theory subject Category:Amount_of_substance.
- Atomic_theory subject Category:Atomic_physics.
- Atomic_theory subject Category:Chemistry_theories.
- Atomic_theory subject Category:Foundational_quantum_physics.
- Atomic_theory subject Category:Statistical_mechanics.
- Atomic_theory comment "In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the antiquated concept which held that matter could be divided into any arbitrarily small quantity.".
- Atomic_theory label "Atomic theory".
- Atomic_theory label "Atoomtheorie".
- Atomic_theory label "Liste der Atommodelle".
- Atomic_theory label "Teoria atômica".
- Atomic_theory label "Teoría atómica".
- Atomic_theory label "Théorie atomique".
- Atomic_theory label "Атомная теория".
- Atomic_theory label "نظرية ذرية".
- Atomic_theory label "原子模型".
- Atomic_theory label "原子理論".
- Atomic_theory sameAs Atomová_teorie.
- Atomic_theory sameAs Liste_der_Atommodelle.
- Atomic_theory sameAs Ατομική_θεωρία.
- Atomic_theory sameAs Teoría_atómica.
- Atomic_theory sameAs Teoria_atomiko.
- Atomic_theory sameAs Théorie_atomique.
- Atomic_theory sameAs Teori_atom.
- Atomic_theory sameAs 原子模型.
- Atomic_theory sameAs 원자론.
- Atomic_theory sameAs Atoomtheorie.
- Atomic_theory sameAs Teoria_atômica.
- Atomic_theory sameAs m.011n7.
- Atomic_theory sameAs Q210553.
- Atomic_theory sameAs Q210553.
- Atomic_theory wasDerivedFrom Atomic_theory?oldid=606573245.
- Atomic_theory depiction Helium_atom_QM.svg.
- Atomic_theory isPrimaryTopicOf Atomic_theory.