Chemical properties. Calcium is a moderately active element. It reacts readily with oxygen to form calcium oxide (CaO): Calcium reacts with the halogensâ fluorine, chlorine, bromine, iodine, and astatine, The halogens are the elements that make up Group 17 (VIIA) of the periodic table.
Purpose. Before the bombing of Hiroshima and Nagasaki, The war was costing not only many Americans' lives, but also caused tremendous casualties in Europe and Japan.he following are quotes by president Harry Truman, The world will note that the first atomic bomb was dropped on Hiroshima, a military base. That was because we wished in this first attack to avoid, insofar as possible, the killing of civilians.
First atomic bomb dropped on Hiroshima, Japan Woe is me.âAlbert Einstein, upon hearing the news of the Hiroshima bombing. The Bombing of Japan. On August 9, 1945, the United States dropped an atomic bomb on the city of Nagasaki, Japan, three days after bombing Hiroshima. By the end of 1945, an estimated 200,000 people had died in the two cities.