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Homework Help: Definition of chemical elements

  1. Apr 4, 2005 #1
    Is oxygen gas a chemical element?
    Is oxygen atom a chemical element?
    The oxygen element in the periodic table actually refers to an oxygen atom or oxygen gas that exist naturally in our surrounding air/atmosphere?
    Thanks to anyone that help and try to explain.
  2. jcsd
  3. Apr 4, 2005 #2


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    Ntzntz,conceptual quaestions...:rolleyes: Open your text book & read the definition of a chemical element.See which option for [itex] O_{2} [/itex] fits the definition.

    For the III-rd,u might remember the connection between Z,the element & the place in the periodic table.

  4. Apr 5, 2005 #3


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    Oxygen in general is an element, oxygen gas is better referred to as a molecule. The oxygen mentioned on the periodic table refers to atom(s) of the element...
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