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.
Reasons Why the Mpemba Effect Happens. 1  increased convection in hot water. 2  increased tendency of cold water to supercool compared with hot water. 3  potential different amounts of dissolved gases in cold water compared with hot water. 4  effect of frost formation -- hot water tends to freeze from the bottom while cold water tends to freeze from the top.