Strange test: Soak your hands in hot bandages

If you're ever impressed with the magic of the packs, which heat up when you bend them, the video of a Canadian scientist will surprise you.

An anonymous scientist from the University of Toronto (Canada) has filmed a scene that places his hand in a flask of melted sodium acetate or "hot ice" , causing it to precipitate around his fingers.

For a few seconds, the man's fingers were covered in thick ice. However, instead of feeling cold, the scientist explained that his hands were really warm, like being immersed in a hot tub.

Finally, the hand of the scientist lies in an ice block, but he can break it because the ice crystals are still soft, like ice cream.

Explaining the process, the scientist who spoke on condition of anonymity said the effect caused by the freezing agent was not "rock" made from water as usual."Hot ice" is made using sodium acetate, the salt made from the reaction between sodium bicarbonate or salt with acetic acid or vinegar.

In reactions, sodium acetate appears to freeze like "rock" when the cold solution changes from a liquid state to a solid state. This process radiates heat, meaning that the solid structure is warm enough to touch.

Sodium acetate solutions are being used in certain types of hot packs. When a metal button is pressed into the inside of the plastic bag containing the solution, it releases chemicals that trigger the reaction. This causes the solution to crystallize and this reaction produces hot heat.