Caesium and Water

Word Equation: Caesium + Water → Caesium hydroxide + Hydrogen
Formula Equation: 2Cs (s) + 2H2O (l) → 2CsOH (aq) + H2 (g)
Ionic Equation: 2 Cs (s) + 2H2O (l) → 2Cs+ + 2 OH- (aq) + H2 (g)


A small piece of caesium metal was dropped into a large trough of tap water behind a safety screen. The metal quickly sank to the bottom before reacting with the water so explosively that it broke the trough of water.



New Media Press 1997
modified PS 02/2012