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.
Hydrolysis is another key reaction associated with chemical weathering. When water (H2O) separates into H+ and OH-ions, the elements can react with ions in the minerals and destroy their atomic compositions, usually forming new minerals. This is what happens when feldspar and hornblende come into contact with water.