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IGCSE® Chemistry - Hodder Plus Home
IGCSE® Chemistry - Hodder Plus Home

Document
Document

... found in a particular region using statistical functions. Electron energy and position are complementary because ...
Organic Compounds FT-IR Spectroscopy
Organic Compounds FT-IR Spectroscopy

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Do You Need to Believe in Orbitals to Use Them - Philsci

... Knowledge of this electron density also allows us to develop the familiar contours wherein it is, for example, 95% likely that the electron would be found upon measurement of its position. For atoms with more than one electron the situation is not so simple. In order to determine the wave-function f ...
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handout 4

Physics and Philosophy
Physics and Philosophy

... A winner of the Nobel Prize, Werner Heisenberg was born in 1901 in Wurzberg, Germany. He studied physics at the University of Munich and for his Ph.D. wrote a dissertation on turbulence in fluid streams. Interested in Niels Bohr's account of the planetary atom, Heisenberg studied under Max Born at t ...
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Pulsed-laser ablation of Mg in liquids: surfactant

Syllabus of the International Chemistry Olympiad
Syllabus of the International Chemistry Olympiad

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Degrees of freedom effect on fragmentation in tandem mass

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Pacing Guide, Revised Aug 17, 2010

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Redox Flash Cards - No Brain Too Small

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The representative Elements: Groups 1A – 4A

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Comparisons between classical and quantum mechanical

... The research on Bose-Einstein condensates has since taken many directions, one of the most exciting being to study their behavior when they are placed in optical lattices generated by laser beams. This has already produced a number of fascinating results, but it has also proven to be an ideal test-g ...
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Atomic theory



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. 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 ""uncuttable"". 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 ""uncuttable 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 ""uncuttable"", 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.
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