Easy Bib.Org for work cited page
http://www.chemicalelements.com
http://periodic.lanl.gov/default.htm
http://www.ptable.com
http://www.lenntech.com/periodic/periodic-chart.htm
https://www.webelements.com/
http://www.uky.edu/Projects/Chemcomics/
http://www.chemicool.com/
http://www.periodictable.com/
http://www.rsc.org/periodic-table
http://www.periodicvideos.com/#
http://www.ptable.com/
http://www.chemicalelements.com
http://periodic.lanl.gov/default.htm
http://www.ptable.com
http://www.lenntech.com/periodic/periodic-chart.htm
https://www.webelements.com/
http://www.uky.edu/Projects/Chemcomics/
http://www.chemicool.com/
http://www.periodictable.com/
http://www.rsc.org/periodic-table
http://www.periodicvideos.com/#
http://www.ptable.com/