Dry ice is a fascinating substance because it sublimates at room temperature - meaning that it transforms directly from a solid to a gas. Dry ice is a block of frozen carbon dioxide. It has a surface temperature of -109.3 degrees Fahrenheit, and if you place it in a bowl of warm water, then this accelerates the sublimation process.
Watch what that looks like and what happens when you place a thin film of soap over the bubbling bowl.
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