Chemistry Definitions

Chemistry Definitions 

  • An energy level is the fixed energy value that an electron in an atom may have.

2008, 2007

  • Heisenberg uncertainty principle: is is impossible to measure at the same time both the velocity and the position of an electron.



  • An orbital is a region in space within which there is a high probability of finding an electron.

2011, 2010, 2006, 2005

  • An element is a substance that cannot be split up into simpler substances by chemical means.
  • An element is a substance all of whose ato...

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