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3.9 Elements and the Periodic Table




The nature of elements and how these elements are listed in the periodic table are discussed. Duration: 6:31.



3.9a Are atoms made out of elements or are elements made out of atoms?
3.9b What is the elemental formula for nitrogen?
3.9c Is the transformation of oxygen to ozone a chemical or physical change?

All video check questions can be downloaded from the EXTRAs menu.