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3.9 Elements and the Periodic Table

 

 

SUMMARY

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

 

VIDEO CHECK QUESTIONS

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.