I got a package yesterday packed in dry ice. Even though it was not Halloween I had to take a brick of it and put it in a bucket of water to make a foggy “witch’s brew” cauldron. I always wanted to do that but never had any dry ice.
What is the fog? Is it just the dry ice sublimating? Or is there a chemical reaction with the water creating some new gas?
Why doesn’t the dry ice just freeze the water?