Is calcium explosive?
Under normal circumstances calcium is not explosive. But it is somewhat reactive. Remember that calcium is an Alkaline Earth Metal in Group 2 of the periodic table. It will react with air and form an oxide or nitride coating. And it reacts with water and forms hydrogen, but not at a rapid rate. It is difficult to set alight, but will burn intensely when ignited. As a raw metal, it is fairly stable, but is stored in a liquid to keep it from reacting with air or the water in air. Use the link below to learn more.