Which sample is a pure substance? a test tube of zinc oxide a container of zinc and oxygen a flask of pond water a jar of soilWhich sample is a pure substance? a test tube of zinc oxide a container of

Which sample is a pure substance?

a test tube of zinc oxide
a container of zinc and oxygen
a flask of pond water
a jar of soilWhich sample is a pure substance?
a test tube of zinc oxide
a container of zinc and oxygen
a flask of pond water
a jar of soil

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Which sample is a pure substance? a test tube of zinc oxide a container of zinc and oxygen a flask of pond water a jar of soilWhich sample is a pure substance? a test tube of zi…

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