Preheat oven to 425 degrees F (220 degrees C). Mix sugar, cornstarch, salt, and cinnamon, and sprinkle over blueberries. Line pie dish with one pie crust. Pour berry mixture into the crust, and dot with butter. Cut remaining pastry into 1/2 - 3/4 inch wide strips, and make lattice top. Crimp and flute edges.
Potassium. The name is derived from the english word potash. The chemical symbol K comes from kalium, the Mediaeval Latin for potash, which may have derived from the arabic word qali, meaning alkali. Potassium is a soft, silvery-white metal, member of the alkali group of the periodic chart.
The chemical element that bears the symbol K, potassium has an atomic mass of 39.0983 and an atomic number of 19. This alkali metal is soft and has a color of silvery white. It reacts to water and it oxidizes in air. Aside from this, the element can produce enough heat to burn evolved form of hydrogen.