The potassium catches on fire and then explodes. Seriously. Don't try it.
Potassium metal will react violently with water to form KOH and hydrogen gas. Due to the heat released by the reaction - the hydrogen gas will ignite. So: placing potassium in water will cause a fire!
BOOM!
When potassium reacts with water, it forms potassium hydroxide and releases hydrogen gas. When potassium reacts with oxygen, it forms potassium oxide.
Write the reaction when potassium sulfide is put into water:
When you put potassium permanganate into water, it changes to a deep purple or violet color.
When potassium permanganate is added to water, the water changes color to a pink or purple hue. This is because potassium permanganate is a strong oxidizing agent that reacts with organic compounds present in the water, causing the color change.
It reacts violently, fizzes about on the surface and then: BOOM!!!
Solid. Not to be put in water (But fun) :)
Like sodium, it burns.
The potassium reacts with the water to form potassium hydroxide and hydrogen gas. The reaction is very exothermic, and the hydrogen explodes during the reaction. THIS IS A VERY DANGEROUS REACTION! DO NOT ATTEMPT IT ON YOUR OWN!
Potassium reacts violently with water to form POTASSIUM HYDROXIDE(KOH)and hydrogen gas K+H2O---------- KOH+H2 The H2 catches fire due to the heat of the reaction which in turn ignites potassium .potassium burn's with a crimson flame.
Silver iodide (AgI), a precipitate insoluble in water, don't react with potassium nitrate.