dolor (plural dolors) ( 1 literary) Sorrow, grief, misery or anguish. 2  A unit of pain used to theoretically weigh people's outcomes.
Potassium, K. Reaction with water. When a small piece of potassium is added to water, it produces a hissing sound as it burns with a lilac flame. It also moves about quickly on the water surface. [ image ]. Hydrogen gas is given out in the reaction. The resulting alkaline solution will turn red litmus blue because of the potassium hydroxide formed.
Answer by Pinguinspiel. Confidence votes 110. Any element in the first column (Group 1) of the periodic table will react violently with water. They get more explosive as you go down the column, so that means lithium, sodium, potassium, rubidium, caesium and francium will be more reactive, in that order. The elements in the second column (Group2) react less violently with water. And like the Group 1 elements, their reactivity increases as we go down the column.