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phyiscal science

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can you help me with the first two - I have a chart of 20.

Substance O - check any appropriate
element - compound - symbol-formula - atom - molecule

Substance O2 - check any appropriate element - compund - symbol-formula- atom - molecule

  • phyiscal science -

    O2 is an element. Also O2 is the symbol for oxygen. It is a molecule.

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