Search houshold products for elements: example, toothpaste contains flouride.
List the product and the element found.
Look for symbols, chemical formulas and on nutritional labels
Links:
http://www.teachersdomain.org/asset/lsps07_int_theatom/
http://www.teachersdomain.org/asset/phy03_int_ptable/
http://www.teachersdomain.org/asset/phy03_vid_atoms/
http://www.youtube.com/watch?v=Uy0m7jnyv6U
http://www.fossweb.com/modulesMS/kit_multimedia/ChemicalInteractions/table/table.html
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