I believe that you think to alkali metals (ex. sodium).
Throw water on it. The logical answer.
It either explodes or bursts up in to flames.
It reacts strongly in water and bursts into flames when exposed to air.
Potassium is the only metal (alkali metal) where a flame is present. Lithium and sodium fizz but there is no flame. Caesium, francium and rubidium all explode on contact with water.
Once the Potassium hits the water, it bursts into flames. Very cool! Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction.
sodium, potassium, rubidiumSodium reacts very quickly with water. All Alkali metals, the first column of the periodic table excluding Hydrogen (H), react violently with water. The lower the row, the more explosive the reaction.
It reacts strongly in water and bursts into flames when exposed to air. =] and it is the third most reactive alkali metal
No, I can only think of one example, sodium (not salt because salt is sodium chloride) is clay like metal that also bursts into flames and explodes when it comes into contact with water.
Diamond can disintegrate if heated enough and will give off carbon dioxide on water and disappear Any of the alkaline metals will burst into flames
They are very reactive. They can react violently or explosively with water, usually catching fire soon after contact. They react with moisture and air to produce strong bases that can cause serious chemical burns. The two most reactive of the metals, rubidium and cesium, burst into flames on contact with air.