How to Make exploding sodium and potassium in water
All the alkali metals react with water to produce elementary hydrogen and the corresponding alkali hydroxides. The reactivity increases with increasing periodic number.The reactions
2 Na + 2 H2O ----> 2 NaOH + H2
2 K + 2 H2O ----> 2 KOH + H2
I got lucky with this sodium reaction, I have never had such a perfect explosion.