Alkali metals

1.http://www.s-cool.co.uk/gcse/chemistry/the-periodic-table/revise-it/group-i-and-group-ii
2.http://www.chemicalelements.com/groups/alkali.html
3.http://video.google.com/videoplay?docid=-2134266654801392897
http://www.docbrown.info/page03/Alkali_Metals.htm