How to make dry ice bombs?
Using gloves break the dry ice into small chunks big enough to fit into a bottle neck. Place about 15 to 20 chunks or more for a faster burst, into the bottle. Fill the bottle with enough water to cover the ice and cover tightly with the cap. Throw the bottle far enough away from you so as to not cause any bodily harm to you or others. It should take about 20-30 seconds to explode.
