Question: Result of flame test of Aluminium strip

Baishali is asking a question about aluminum
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by Baishali | October 01, 2017 01:03 | #14984

What will happen if Aluminum strip is brought over a flame


We did the metal flame test demo last year using the PLOTS spectrometer. I thought we had tested aluminum, but it doesn't look like we photographed it for the write-up. My memory is that it glows red and starts to melt.

Flame tests are typically looking for emission spectrum, which you would look for with a spectrometer and which are temperature independent. Aluminum has very faint spectral lines, so you probably wouldn't be able to see it with a spectrometer (we looked but didn't see anything). You will be able to see blackbody ("red" hot, "white" hot, "blue" hot) depending on temperature. For instance, a magnesium strip burns bright white but steel wool burns red -- that's because magnesium burns hotter.

Here's a video of aluminum burning, which should give you an idea of what to look for.

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