TheConfusedMedic
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#1
Report Thread starter 5 years ago
#1
Has anyone got any good ways to remember the colours of the flames?
So far I have:
- Na: BanaNA --> yellow
- K: LilaC (sounds)
- Ca: CArrots --> orange-red

But I'm stuck for Cu (blue-green), has anyone got any ideas?
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glowanti
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#2
Report 5 years ago
#2
The banana was good I never thought of that! For Cu I use the 'C' as reminding me of the sea, which is blue-green
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ihatePE
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#3
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#3
C for coral xD
and coral reef is blue green ish
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Peroxidation
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#4
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I don't have any good mnemonics but I do have this:

Cu (2) (halogen compound) - blue/green
Cu (2) (other) - green
Cu (1) - blue/green
K - lilac
Na - orange
Li - crimson
Ca - brick red
Ba - pale green
B - green
Al - white (light blue when really hot)
As - blue
Bi - azure
Cd - brick red
Ce - blue
Cs - blue/purple
Ge - pale blue
Fe (2) - gold (electric blue when really hot)
Fe (3) - orange
Hg - red
In - blue/purple
Mn (2) - green/yellow (expected as Mn 2 oxidation state often produces this colour)
Mo - green/yellow
P - pale blue
Rb - red/purple
Sr - scarlet
Tl - green
Te - pale green
Se - azure/blue

There's more but I can't remember the rest

For A level purposes you only really need groups 1, 2 and some of the lighter transition elements.

If you ever get the chance check out titanium in a flame test under super high temperatures, it's so cool!
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Tetragon213
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#5
Report 5 years ago
#5
Statue of Liberty. It's made of Copper, and it's green.
Or copper piping that's starting to 'rust'. Or any building with a green roof.
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