Chemists in the Czech Republic and Germany captured images of the alkali metals sodium and potassium exploding on contact with water. They saw a flash of bluish purple and "spikes" of metal ...

Putting on the brakes Jungwirth and his colleagues made an alloy containing sodium and potassium, which is liquid at room temperature, and lowered this gently onto the water surface instead of the ...

Water is typically also treated with a chlorine disinfectant. Potassium permanganate can be toxic at high concentrations, but no health problems were reported in the town.

As a follow-up to his first, fantastically explosive experiments with sodium and potassium bullets, the Backyard Scientist decided to take some watermelons to the firing range.