How Hand Warmers Work (THERMAL IMAGING) - Periodic Table of Videos
Featuring Professors Martyn Poliakoff and Roger Bowley. Sodium Acetate and Hand Warmers. Our thanks to the Google Making & Science team. #ScienceGoals More #ScienceGoals videos at: https://www.yout...
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We're talking about these funny hand warmers in the shape of a heart. And each one contains a liquid and a little metal clicker, and the point is that this can generate quite high temperatures which will keep your hand warm. Inside is sodium acetate that is dissolved in water. It's a very concentrated solution. Sodium acetate is made up of ions, positively charged sodium, negatively charged acetate. Positive and negative attract each other and so you need energy to pull them apart, and you have to imagine a huge array of these. Millions and billions of these, going alternately, positive, negative and so on. But I can't afford that amount of model. So I press it down and there we go. If I look at it on the screen you can see a bl...
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We're talking about these funny hand warmers in the shape of a heart. And each one contains a liquid and a little metal clicker, and the point is that this can generate quite high temperatures which will keep your hand warm. Inside is sodium acetate that is dissolved in water. It's a very concentrated solution. Sodium acetate is made up of ions, positively charged sodium, negatively charged acetate. Positive and negative attract each other and so you need energy to pull them apart, and you have to imagine a huge array of these. Millions and billions of these, going alternately, positive, negative and so on. But I can't afford that amount of model. So I press it down and there we go. If I look at it on the screen you can see a bl...
