What chemical ignites in water?

Answer 1

Sodium, Potassium, Rubidium, Cesium, Francium

Many compounds are also explosive when mixed with water, for example concentrated acids. This is why acid should always be added to water rather than water to acid.

Answer 2

Lithium (spark shower), sodium (small explosion), potassium (medium explosion), rubidium (gigantic sparks), caesium (large and loud blast), and supposedly francium (never attempted because francium is extremely rare), and supposedly any other alkali metal that's yet uncreated (like ununnenium).

Answer 3

Potassium ( /pɵˈtæsiəm/ po-TAS-ee-əm) is the chemical element with the symbol K (Latin: kalium), atomic number 19, and Atomic Mass 39.0983. Elemental potassium is a soft silvery-white metallic alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction.

Answer 4

When quicklime (calcium oxide) is combined with water, it releases large amounts of energy (heat) upon hydration. When combined with a fuel, it can increase ignition propensity the more water is added.

Another set of substances that can ignite when water is added are the alkali metals starting with sodium as the lightest (as well as potassium, rubidium, etc.), with increasing reactivity as you go further down the Periodic Table in Group 1. When water is added to any of these alkali metals, they react to form an alkali metal hydroxide, hydrogen gas, and energy, at which point the hydrogen is ignited spontaneously. The alkali metal rubidium reacts explosively with water.

Answer 5

All alkali metals, such as lithium, sodium, potassium, rubidium, francium and cesium

Answer 6

All metals from alkaline metals group, number I, in the periodic table:

(Li)-Na-K-Rb-Cs-Fr in increasing reactivity order.

Answer 7

Most of the chemicals on the very left group on the periodic table, with the most reactive (Francium) at the bottom

Answer 8

potassium...

Answer 9

Sodium

Answer 10

Potassium