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Topic: Materials that when put side by side have an exothermic reaction?  (Read 5745 times)

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Offline ssolitare

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Materials that when put side by side have an exothermic reaction?
« on: March 21, 2011, 12:08:10 PM »
So are there materials or objects (like products) that when put side by side share, gain and release heat without the use of electricity or battery power?
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Offline Stepan

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Re: Materials that when put side by side have an exothermic reaction?
« Reply #1 on: March 23, 2011, 06:59:20 AM »
Na+H2O
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Offline Kevin_GWU

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Re: Materials that when put side by side have an exothermic reaction?
« Reply #2 on: March 30, 2011, 08:13:14 PM »
Sodium and Potassium metal when rubbed together, or even sit with each other form an alloy, NaK, this reaction is exothermic i believe.  in the presence of H2O, it explodes. 
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