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30 kwi 2013 · The instant cold packs are not pre-cooled—you just squeeze the cold pack and its starts to get cold. So how does it work? In this chemistry science fair project, you will investigate the chemical reaction that occurs in instant cold packs.
How do thermodynamics work in a cold pack? Now, let’s go back to our instant cold pack. An instant cold pack is the perfect example of an endothermic reaction. There are many possible ingredients in an instant cold pack, but they often contain solid ammonium nitrate and water. Did you know? Ammonium nitrate is a nitrate salt.
View full lesson: http://ed.ted.com/lessons/how-do-cold-packs-get-cold-so-fast-john-pollardIf you stick water in the freezer, it will take a few hours to fre...
See how Instant Cold Packs work! I turn one inside out to show you the parts / ingredients to explain the reaction that creates instant ice-like conditions....
You can make a basic cold pack by mixing a salt (such as potassium chloride) or soda (such as baking soda) with water. Mixing the two creates a chemical reaction that uses up energy, which makes the mixture colder.
The Science Behind Instant Cold Packs Revealed • Cold Pack Science • Discover how instant cold packs work without using ice! Through an endothermic reaction,...
Speaking of refrigeration and coldness, have you ever used one of those "instant cold packs" that looks like a plastic bag filled with liquid. You hit it, shake it up and it gets extremely cold. What's going on here?
