4elements - THE ELEMENTS Glenn V. Lo Department of Physical...

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    THE ELEMENTS Glenn V. Lo Department of Physical Sciences Nicholls State University
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    Element A sample of matter that cannot be  separated into distinct parts is made up  of only one “ELEMENT.”  The sample is  said to be a “pure sample of an element.” Atomic Explanation (John Dalton): in a  sample of a pure element, all the atoms  are identical; atoms are indestructible
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    Occurrence Most abundant in universe: hydrogen (in  the stars) Sand: silicon and oxygen Air: oxygen and nitrogen Water: oxygen and hydrogen Living things: carbon, hydrogen, oxygen,  and nitrogen
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    Symbols for Elements One or two letters, derived from name First letter must be capitalized, second  letter must be in lower case Which of the following is correctly  written? Ar, aR, A R , ar 
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    Symbols for Elements Some symbols are derived from Latin Silver: Ag (argentum) Gold: Au (aurum) Lead: Pb (plumbum) Tin: Sn (stannum) Iron: Fe (ferrum) Mercury: Hg (hydrargyrum)
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    Symbols for Elements Some symbols are derived from Latin Sodium: Na (natrium) Potassium: K (kalium) Copper: Cu (cuprum) Tungsten: W (wolfram, German name)
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This note was uploaded on 06/11/2009 for the course CHEM 105 taught by Professor Wessel during the Spring '08 term at Nicholls State.

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4elements - THE ELEMENTS Glenn V. Lo Department of Physical...

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