Poppers

Supplies:  Old film canister with the lid, alka-seltzer tablets, and water

Fill an old film canister 1/2 way with water.  Place one alka-seltzer tablet inside and quickly put the lid on top.  Place the “loaded” film canister on the ground, (outside), and within seconds the lid will pop very high into the air!

Kids of all ages seem to enjoy this experiment.