Magic Liquid Science Experiment at Home 🔮🌈🧪⚗️
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- Опубліковано 1 жов 2024
- Welcome to the Tommy Technetium channel, and I'm back with cool and easy science experiment that you can make at home. Using simple materials and universal acid base indicator, you can create a rainbow of color effects in a bottle. You can even get different colors to form in three layers! The effect in this experiment is caused by acid base chemistry and the "salting out" phenomenon. Chemistry is so beautiful! What a great do it yourself science experiment! Stay tuned for more science tricks and cool chemical reactions!
It works with most pH indicators (bromothymol blue, phenol red, phthalein-type indicators, etc.). The acid form and base form do not have the same solubility in water.
Indeed this occurs a lot, but notice that most of the dyes remain in the alcohol layer, even at high pH
@@TommyTechnetium I use acetone for this demo, not isopropanol. Perhaps it explains some differences.
An other example is bromophenol blue: so much water in the acetone phase you don't see a difference between the two layers.
@@brusicor02 That's very interesting. I love all the differences that can be achieved by varying salts, etc
Hi, if by any means you have your hands on some bromine I think it could be interesting to do the bromation of carrot or tomato juice. I think betacaroten which has lots of double C=C bonds would make the juice change in color and probably make a rainbow effect from red (starting with tomato) to blue as the bromation goes on.
Btw, I love all your videos, visual, easy to understand and straight to the point 🧑🏻🔬
Kind regards
Great idea! I've only tried a bromination reaction once and couldn't get it to work. Maybe when I get access to a lab again I can give this a shot
How cool!
Thank you 😊
thats sick!
Thank you 😊
metric units = international units for an international video
Murica bro
Yes, really very nice and, above all, can be done at home using freely available chemicals.
The only universal indicator solution is, strangely enough, difficult to obtain and, if so, very expensive.
You can also leach the easily available indicator paper with a mixture of water and ethanol and use the resulting solution.
Anyway: this is a must try!
What surprises me is that the phenolphthalein from the mixture of the universal indicator is more soluble in salt water than in isopropanol. It is actually almost insoluble in pure water, but highly soluble in ethanol (hence the water-ethanol mixture for leaching the paper).
I'm wondering how red cabbage juice would work as an indicator.
What other indicators did you use at the end of the video? I have no idea and I hope you'll tell us...
This wins a Tommy Technetium silver comment award 🥈. Universal indicator can be purchased online for a fairly inexpensive price. I have indeed tried other indicators and as noted in the video, food dye. I've also used various salts and different organic liquids. At high pH, phenolphthalein has a -2 charge, which explains why it dissolves in the salt water layer at higher pH. The different colors in the video at the end were all obtained by using the recipe outlined in the video, but different amounts of acid/base to get different pH values and therefore different colors
Here in Germany universal indicator solution is only offered by sellers which exclusively supply commercial and institutional customers - and it costs more than 80 Euros per litre then! 😧
And of course that's right: in its deprotonated form phenolphthalein is better soluble in water than in organic solvents - I just didn't think of that... ☺️
But one thing I really have to ask myself: Where are all your subscribers? Your videos, especially the long ones, deserve much more attention! 🤩💯
@@experimental_chemistry Thank you for your kind words. Looks like you'll be using anthyocyanin indicator extracted from plants for this experiment. They will likely decompose over time. Nevertheless, please do let me know if you try this experiment using anthocyanin extract. I'd love to hear how it works out
@@TommyTechnetium
No, just tried it with a selfmade extract from universal indicator paper which is still a little too dilute to give impressive results like yours, but the principle was already well recognizable and looked very nice - especially when I added caustic soda.
Btw.: In the beginning when I added i-pOH to the brine first a lot of salt precipitated out, so I had to decant off.
Yes, the dye in red gabbage is an anthocyanine. I have none at hand at the moment but I will try it out next time I cook it as a side dish to roast anyways - in christmas time I guess, because it's a typical winter vegetable. We cook it with bayleaf, cloves and vinegar - therefore it's finally already more blue than red gabbage... 👨🍳
In the end cooking is nothing but chemistry, and chemistry not much more than cooking. In both cases you have to follow a recipe to succeed, but in chemistry you shouldn't lick the spoon... 😉☠️
@@experimental_chemistry Nice!! What percent isopropyl did you use?
bisexual water
💗💙💜
Hey man great demo but the L/R audio is 180 out in a lot of places... has the effect of feeling like my head is being ripped apart from the inside 🤣
So sorry... 😞
Would red cabbage juice work? I don't know where to get the indicator.
It will work but the cabbage indicator will decay over time
Hey thanks for the response. My nephew LOVES your videos. He's 6! I love them too, keep them coming!
@@nonamegiven7594 Thank you for your kind words. I'm always so happy to hear when young kids enjoy the beauty and fascination of science
@@TommyTechnetium Here's a question from my nephew. What other vegetables or fruits could be used besides red cabbage?
@@nonamegiven7594 A surprising number of plants work. I'd encourage your nephew (with adult help) to test various plant-based foods with vinegar, baking soda, and ammonia. Start with blueberries, extracting the blueberry pigments into water
Hey I am new to this channel, I just saw your video testing the 4 water bottles ph and acidic.
I was wondering what type of water bottles to buy then? Mountain valley?
What’s your thoughts on reverse water osmosis filtration systems?
What should we drink then for clean water to beat your test?
Please let me know thanks!
I make no claims on what type of water you should drink
You could put red cabbage and water in a blender, strain it, and then use it as an indicator.
Indeed! I need to try this indicator with this system
thanks 👍🏻👍🏻
So...what're the bubbles coming off of the soln?
When alcohol and water mix, there is a loss of volume, the air bubbles represent this lost space
I bet this would make an awesome lamp (just the clear solutions) using ultrasound to cause mixing and RGB LED below to make it shimmer.
@@TommyTechnetium That's.. not how that works, not remotely, in fact that's just straight up wrong, a loss of volume due to mixing in no way explains the formation of a gas, if that's even what's taking place. I get the feeling you were trying to explain it assuming I'm like 10 or something, which I get it, I do that sometimes, but it's still just wrong
My best guess is residual bubbles from the addition of the alcohol since it was quite splashy, otherwise I'd do a characterisation of the gas since if it's something new, it's likely hydrogen or oxygen, either or it definitely has nothing to do with the loss of volume since that can and does happen without the generation of gas.
@@andym.s.5231 I appreciate the pushback; I'm not close to sure what's going on. I highly doubt, however, that a chemical reaction is going on to generate new gases. Perhaps the mixture somehow allows dissolved gases to escape?