Treebeard's Homepage : Stumpers

Treebeard's Stumper
18 Oct 96

Here's another question about heat that came up in science class this week when we mixed salt and ice as part of showing that fire produces water vapor. In cold climates, we use salt to melt ice from walkways and roads. But we also use salt to freeze ice cream the old fashioned way. How can this be?

(Hint: think about fans!)


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Marc Kummel /