The rainbow flame demonstration

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You can safely perform the demonstration of metal ion colours in a flame if you pay close attention to the hazards. Here’s how.

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Thank you for including proper subtitles on this (rather than relying on auto-generated ones), it makes it much more accessible for people like me who don't have good speech processing!

TansyBlue

Your videos never fail to ignite my passion in chemistry and how I can use this to make learning fun for my students. Thank you!

mereblue

I can remember doing something similar in my school days. We did it in Grade 8 Science class, and we did all the mucking about with the chemicals and flames ourselves. The difference? No solvents, so no risk of big fires! We just had a wire loop with a wooden handle and we would get a few crystals of chemical onto the loop (a bit of water helped with that). Stick the loop with the crystals into a Bunsen burner flame and you'd get your colours. I remember using strontium nitrate (vivid red), copper sulphate (green), potassium something-or-other (probably nitrate, for light purple), sodium chloride, etc. I seem to remember diffraction grating spectroscopes so you could see the spectral lines of the different flames.

keithmills

Seems like a very safe and interesting demonstration when done correctly. Great video 👍

woahkudros

Lithium- dominant red and little orange
Sodium- orange
Boron- green and orange
Copper- green and little orange
Potassium - blue and little orange

JustmeSEVEN

3:30
Lithium - Red
Sodium - Orange
Boron - Teal Green
Copper - Green
Potassium - Blue

Epic

Ah the flames of Lithium and Copper are just so mesmerizing

deekshasunil

How did Chemistry teacher Anna Poole give her students 3rd degree burns doing this? Did she bring a large jug of Ethanol or pour straight from the bottle after the experiment began?

digitalcurrents

all I wanted was an experiment for my stories. but why does 'failed experiment' keep coming up on my search results? I'm glad I found this!

helenakrieger

Repour Solvent(ethanol) on the salt after an initial trail. WAIT 15 MINUTES. Good video. Learn a lot, nice visual, and informative 😁.

TrillBast

THESE ARE AWESOME VIDEOS THANK YOU I AM NOT A STUDENT BUT WORK IN A FOOD PLANT MOCRO LAB AND AM ALWAYS COURIOUS ABOUT HOW ALL THINGS WORK ESPECIALLY CHEMISTRY

shawnaluckey

Who else came to know this experiment, after the sad news of Alonzo Yanes?😔

lolivars

"A lot of injuries have been caused..." sounds good. Sign me up. As a demonstration it looks neat, but what's the value of this particular setup compared to burning in a controlled flame one at a time given the risks, the extra material and setup required, and the lack of focus on any one metal.

NuncNuncNuncNunc

Well it's good to know Alonzo Yanes is gonna be living the good life with the $60 Million dollars he got from the city, I can't imagine what he went through and is still going through

melk

I am horrified by the amount of safety tips this dude gives me when handling rubbing alcohol.
What happens when this person has to handle organic peroxides?

IIIAnchani