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Monday, March 28, 2011

Thermite and Liquid Nitrogen

What happens when you take the most exothermic reaction you can think of and dunk it in the coldest thing you can think of?

On Friday we saw a thermite reaction. We noticed how extremely exothermic it was -- it gave off an intense amount of heat and light. Would you be able to quench a reaction like that with something incredibly cold, like liquid nitrogen? That is the kind of question that good scientists ask.



What questions do you have about the reactions we've seen?

12 comments:

  1. I was wonderig if there is anything that can cool down thermite, or that is colder than liquid nitrogen. Also I was wondering if they had used a lot more of the liquid nitrate than thermite would it have worked? And is there anything that can stop a thermite reaction?

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  2. I just want to know why the thermite melted the liquid nitrogen into like a molten heap.... Its interesting to watch these videos and learn more about the different type of reactions there are.

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  3. i think it's very interesting that when putting something very hot with something very cold it resulted in such a big reaction of heat and energy. when i think of something hot reacting with something cold it makes me think of something like ice reaction with fire which just tends to melt. i know that ice isn't extremely extremely cold, but i was very surprised in the intensity of the reaction between liquid nitrogen and thermite. i don't understand how they discovered or knew that thermite was so hot in the first place though?

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  4. I thought the reaction in this video was cool and something I thought was interesting was that the liquid nitrogen solution is 190 degrees celcius making it 163 degrees colder than the north pole! brrr!

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  5. If the liquid nitrogen is supposedly as cold as they say it is, why would it upset the thermite more instead of control it somewhat?

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  6. it was very interesting watching this but i just have one question as to why the thermite melted the liquid?

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  7. I noticed that the question in the video was to see if liquid nitrogen is cold enough to neutralize the intense heat of thermite. Thermite has to be pretty intensly hot to still create fire even in liquid nitrogen which is -198 degrees celcius!

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  8. I thought this video was interesting, but after watching it I'm still wondering if it is possible to control a reaction like this? Will the thermite always be the same temperature, or can it be cooled down?

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  9. I noticed when watching this video that the thermite melted the cylinder full of liquid nitrogen, but it did not melt the platform that it was on...is that because the liquid nitrogen cooled it down a little? Or is it because there are some things that thermite cannot melt? I found it strange that the thermite did not melt everything after they described it as being so extremely hot. I also was wondering if there is anything colder than liquid nitrogen?

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  10. This was an interesting video. I wonder if you put thermite in a freezer for a very long time, would it not be so hot. If you did an experiment in the freezer with thermite would it still get very hot?

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  11. I agree with Carolines question. Is there anything that is cold enough to control the extreme temperatures of thermite. Has the actual temperature been discovered if so what is it

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  12. After watching this video I am impressed with the reaction but I am just left with the question if the thermite will ever be effected? Would it be effected with more of the liquid nitrogen?

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