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Topic: Determining the presence of Na+ ions within paper.  (Read 2180 times)

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terre

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Determining the presence of Na+ ions within paper.
« on: October 07, 2015, 04:45:59 PM »
Who was that famous scientist who took students' notebooks and by using a torch could tell whether the students had learnt or not?
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Offline Arkcon

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Re: Determining the presence of Na+ ions within paper.
« Reply #1 on: October 07, 2015, 04:56:22 PM »
What would be the logic behind this application?  If they cried onto the pages, then they learned?

You can look up the flame test, you may find a reason why this test isn't a very good one.
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

terre

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Re: Determining the presence of Na+ ions within paper.
« Reply #2 on: October 07, 2015, 05:18:29 PM »
People sweat and sweat stay on the paper. If you use the flame test, you can determine Na+ ions. It is important, you can't ruin students' notebook. This test is not very good and don't work all the time.
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