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3 March, 06:40

Which of these is an element, oxygen, sodium chloride, water, or air

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  1. 3 March, 10:16
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    Oxygen and sodium are the only ones that are elements here example like the others air is a mixture of a compound and an element
  2. 3 March, 10:25
    0
    Oxygen is a chemical element

    sodium chloride (table salt) is an element too
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