When the ice is solid (don't take out of the freezerjust yet!) you are now ready to get some warm water ready. Fill your tube completely with water and pour into a container that can be heated (a cup that you can microwave or a pot that you can heat on the stove). Fill your container with at least 3 tubes worth of water. Number of tubes of water: Total Volume of water to be heated: (cm3) Mass of water to be heated: (grams)