physical science

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we have a whole list and I am confused and can someone help me with the first 2 as a reference to use.

substance O
substance O2
**these are both separate lines**

name =
under the rest we check appropriate box
element
compound
symbol
formula
atom
molecule

  • physical science -

    O is an element, symbol, (single) atom
    O2 is a compound, formula and molecule

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