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Rutherford’s Nuclear Atom 18 Aug 2010 | 08:34 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Scientists realized that if all atoms contain electrons but are electrically neutral, atoms must also contain an equal q...
HISTORY OF ATOMIC THEORY 18 Aug 2010 | 08:32 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 The work of British chemist John Dalton at the beginning of the 19th century revealed some of the first clues about the ...
Characteristic Radiation of Atoms 18 Aug 2010 | 08:31 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Atoms emit radiation when their electrons lose energy and drop down to lower orbitals, or energy states, as described in...
STUDYING ATOMS 18 Aug 2010 | 08:29 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Physicists and chemists first learned about the properties of atoms indirectly, by studying the way that atoms join toge...
Atomic Properties 18 Aug 2010 | 08:28 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 The atom’s electron cloud, that is, the arrangement of electrons around an atom, determines most of the atom’s physical ...
THE QUANTUM ATOM 18 Aug 2010 | 08:26 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Scientists of the early 20th century found they could not explain the behavior of atoms using their current knowledge of...
FORCES ACTING INSIDE ATOMS 18 Aug 2010 | 08:24 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 In physics, a force is a push or pull on an object. There are four fundamental forces, three of which—the electromagneti...
PROPERTIES OF ATOMS 18 Aug 2010 | 08:22 pm
Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Atoms have several properties that help distinguish one type of atom from another and determine how atoms change under c...
Atom 18 Aug 2010 | 08:02 pm
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Atom, tiny basic building block of matter. All the material on Earth is composed of various combinations of atoms. At...
Electron cloud 6 Jun 2009 | 08:37 pm
An electron cloud representing the ground state of hydrogen, with a plus and a minus sign superimposed. The plus sign represents the location of the nucleus; the minus sign represents a possible locat...
