Dry-Ice Jack-O-Lantern

Choose a pumpkin large enough to hold a no. 10 can.   Clean pumpkin and carve a spooky face.  Fill can about 3/4 full of hot water, 1/2 c. salt and mix.  Place container in the pumpkin.  If there is room, place a flashlight or weather light between the pumpkin and container to add to the effect.  Wear gloves to protect your hands.  Drip two or three large pieces of dry ice into the container of water.  Dry ice will steam up and out of the face of the pumpkin.  as water cools, ice will form around the dry ice, causing it to stop bubbling.  Salt water will cause motion to last longer after 15-20 min., drain cold water from the container and replace it with the hot water to start the reaction again.