Here’s a simple experiment you can try at home that produces a unique substance called sodium acetate from baking soda and vinegar. It’s also often referred to as “hot ice” because at room temperature it forms crystals just like ice does—but without the need for a freezer.
On a recent episode of QI, Stephen Fry made a very special "ice tower" device. You can make it as well. Here's how.
With vinegar and baking soda, you can make ice that warms your hands when you press them against it. Amaze your friends and make your enemies burn with envy when you master the secrets of "hot ice."