How alkali metals react with water and air.
People who liked this video also liked
Comments
21 comments posted so far. Login to add a comment.


8. loadrunner commented 11 years ago
Don't even dare to try Francicum. 



10. primate1970 commented 11 years ago
I remember watching this very same video in science class back in the 1980's.....!
Thanks for the memories....


Thanks for the memories....







16. blackd commented 11 years ago
#8
Bulk francium has never been viewed. Because of the general appearance of the other elements in its periodic table column, it is assumed that francium would appear as a highly reflective metal, if enough could be collected together to be viewed as a bulk solid or liquid. However preparing such a sample is impossible, since the extreme heat of decay (its longest isotopic half life is only 22 minutes) would immediately vaporize any viewable quantity of the element.
Bulk francium has never been viewed. Because of the general appearance of the other elements in its periodic table column, it is assumed that francium would appear as a highly reflective metal, if enough could be collected together to be viewed as a bulk solid or liquid. However preparing such a sample is impossible, since the extreme heat of decay (its longest isotopic half life is only 22 minutes) would immediately vaporize any viewable quantity of the element.


18. stonelocomotief commented 11 years ago
#1 He doesn't drop only a chunk of metal. It's in a small container that is made of water soluble material, such as polysacharide. If it wasn't in this container, it would have lit on fire in the air or explode immediately on contact with the water. For the sake of an increased visual effect and the safety of handling the metal it is put in said container.


20. Judge-Jake commented 3 years ago
Umm interesting, very interesting and also not very funny 

+34 1. ktg_5 commented 11 years ago