you can answer this by looking at the column in the periodic table that has potassium, all of the elements in the period react the same so
lithium, sodium, rubidium, cesium, and francium have similar properties and react in the same way
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Potassium reacts similarly to all of the other group one metals (the alkali metals). They react vigourously with water to give off hydrogen and heat (often burning or even exploding). They react quickly with oxygen in the air. The products of both types of reactions are strong alkalis.
Lithium is the least reactive. Then sodium. Potassium is next. Rubidium is violently reactive. Caesium is just mental.
Try searching for "brainiac alkali metals video" for a very good demonstration of just how mental.<
Sodium is another metal that reacts in a similar way to potassium. Both metals are highly reactive and will react vigorously with water, producing hydrogen gas and forming a hydroxide solution.
When potassium metal reacts with water, it produces a lilac-colored flame. This flame color is a result of the energy released during the chemical reaction between potassium and water.
When potassium metal reacts with fluorine gas, it undergoes a redox reaction to form potassium fluoride. The potassium metal loses an electron to form a potassium cation, and the fluorine gas gains an electron to form fluoride anions. This reaction is highly exothermic and produces a white solid as the product.
The reaction between potassium metal and fluorine gas is a redox reaction. Potassium transfers an electron to fluorine, forming potassium fluoride. This reaction is highly exothermic and produces a bright flame.
Potassium reacts with water to produce potassium hydroxide (KOH) and hydrogen gas (H2).
Lithium is a metal. It is the lightest metal and belongs to the alkali metal group on the periodic table.