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added by globalquiz.org Feb. 11, 2016, 3:20 p.m.
Which of the following is not a chemical element?
neon
methane
chlorine
nitrogen
Neon, chlorine and nitrogen are chemical elements. Methane is a chemical compound, the simplest alkane and the main component of natural gas.
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Votes

      Acceptable  hanif ahmed
      Acceptable  life-o-holic
      Acceptable  Sancho