In this episode, we discuss the reactions of metals with water.

Reactive alkali metals like potassium, sodium, and lithium undergo exothermic reactions when introduced to cold water.  These reactions yield a metal hydroxide and hydrogen gas. 

Potassium exhibits the most energetic reaction, readily igniting the produced hydrogen and the metal itself with a lilac flame. 

Sodium reacts vigorously, melting into a mobile sphere on the water's surface. 

Lithium demonstrates the mildest reaction, steadily fizzing and diminishing as it floats. 

The reactivity of these metals with water follows the order: potassium > sodium > lithium.

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