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Chemical Elements

Chemical Elements. The simplest form in which a substance exists. Cannot be broken down by a chemical reaction. 91 occur naturally, the rest are man made. Colors on the periodic table are determined by state at room temperature.

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Chemical Elements

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  1. Chemical Elements • The simplest form in which a substance exists. Cannot be broken down by a chemical reaction. • 91 occur naturally, the rest are man made. • Colors on the periodic table are determined by state at room temperature. • Each is represented by a one or two-letter symbol. First letter is capitalized, second is lower case.

  2. Some Elements are named after a property • Au: Latin aurum – shining dawn • Br: Greek bromos – stench • H: hydros genes – water born (water former)

  3. Some are named after the location of discovery • Indium (In) • Francium (Fr) • Germanium (Ge) • Californium (Cf) • Helium (He)

  4. Others are also named for a celestial body • Tellurium (Te) • Mercury (Hg) • Uranium (U)

  5. Still others were named after famous scientists. • Nobelium (No) • Curium (Cm) • Einsteinium (Es)

  6. Names for the elements have their origins in several languages: Latin, Greek, OldeEnglish, even Arabic Most of the symbols we use come from the English or Latin names. Some examples of symbols derived from the Latin include: Au - gold Ag - silver Cu - copper Pb - lead

  7. There is one symbol, however, that does not come from English or Latin. W - tungsten The W is from wolfram, the German word for tungsten. The metal is found in the mineral known as wolframite.

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