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Mailinmypocket
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Selenium dissolving in sodium sulfide solution
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j_sum1
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Mailinmypocket, that looks truly stunning. (I bet it didn't smell as good as it looks!)
Do you mind if I ask what kind of experimentation you were attempting?
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Mailinmypocket
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Thank you! The smell was typical egg fart variety  I was going to make some
selenium dioxide but got sidetracked by Woelens page on selenium and thought it looked too pretty to not try:
http://woelen.homescience.net/science/chem/exps/se_chemistry...
I also made a time lapse of selenium dust floating on top of the sodium sulfide:
http://youtu.be/hYXiRPA-Klo
[Edited on 26-11-2014 by Mailinmypocket]
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j_sum1
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Vid looks cool too.
Unfortunately woelen's website is blocked by the security settings on my work laptop. There have been a few links to his site that I have not been
able to read. I will have to get that rectified but it means a chat to the IT staff.
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Jylliana
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My silver bar remelted ^_^
I held it in a bunsen burner for a while with a pair of tongs and the silver started dripping, to catch it I placed a large beaker with cold water
underneath. This is the result.
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The Volatile Chemist
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Wow, rather pretty! And a pretty good deal of Ag there.
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Jylliana
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The original bar was 10grams. I might have lost some because I have done some other experiments with it before melting it, but not much.
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curelom
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Wow, that silver is stunning, Jylliana!
I'm new here, and just looked through this whole thread. I really enjoyed the photos, everyone!
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Jylliana
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Welcome to ScienceMadness, curelom
I hope you enjoy it here ^_^
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Hellafunt
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This is my fave mineral, wulfenite. I took the pic at a museum in Toronto, I can't think of the name right now. i like it because it looks like peanut
brittle (the mineral, not the museum.)
[Edited on 10-12-2014 by Hellafunt]
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Atrum
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Hello, I am new here.
I've been teaching my self chemistry for a while now and find that I could use someone to bounce my thoughts off of once in a while.
I look forward to becoming an active member here.
I'll start things off with my own pretty picture.
Potassium nitrate crystals.
[Edited on 10-12-2014 by Atrum]
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Bert
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Mood: " I think we are all going to die. I think that love is an illusion. We are flawed, my darling".
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NOT a pretty picture, actually!
Rapopart’s Rules for critical commentary:
1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it
that way.”
2. List any points of agreement (especially if they are not matters of general or widespread agreement).
3. Mention anything you have learned from your target.
4. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007).
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Zyklon-A
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Welcome to the forum Atrum! I too started out teaching myself, it's a great way to learn.
Potassium nitrate is still one of my favorite compounds to recrystallize, and I just bought 5 pounds of the stuff, so I'll be crystallizing it soon.
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Atrum
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Thanks Zyklon.
Here are a few more from my past experiments.
1. NO2 gas
2. Luminol (made from otc chemicals)
3. Copper acetate crystals
  
[Edited on 12-12-2014 by Atrum]
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curelom
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Nice pictures, Atrum! I love the copper acetate crystals. About how big are they?
-Mariah
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Atrum
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Thanks, they are about the size of a lima bean.
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Zyklon-A
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Nice, how'd you make the N2O4/NO2?
Is it dry?
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Atrum
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The NO2 was a by product from when I made nitric acid.
I decided to capture some of it because I thought that it looked cool.
I used a nitrate salt, HCl, and some copper. I fed the gases into cold 35% H2O2.
It is not dry.
[Edited on 12-12-2014 by Atrum]
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blargish
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Some different crystalline compounds:
1. Potassium Tetraperoxochromate(V)
2. Copper(II) Chloride Dihydrate
3. TCCA (crystallized from acetone)
  
BLaRgISH
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UnintentionalChaos
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Orgsyn says "Approximately 500 g. of cracked ice is added, and then, with mechanical stirring, the diazonium salt solution is run in as rapidly as
possible. The mixture becomes a bright orangered." during the prep of phenylhydrazine. They're not kidding, man.
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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Jylliana
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Made fluorescein today
Unfortunately my fingers now do fluoresce as well, while I thought I worked in a really clean way 
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Jylliana
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Two beads of aluminum among other stuff that didn't melt properly.
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The Volatile Chemist
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Those are really pretty pictures. Where'd the aluminum above come form, Jylliana?
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Jylliana
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It was just aluminium foil. It does melt, but it required a lot of effort to do that, partly because my burner isn't very hot.
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I Like Dots
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Copper Crystals
I have been growing some copper crystals recently.
I use a computer power supply, 3.3v carrying about 16 amps. I use a sulfuric acid/copper sulfate bath. I am not sure about the amounts, as i have
been constantly adjusting the concentration, but it is about 100g/L of copper sulfate, and enough acid to bring the pH to 2-3. Recently, Ive added
60ppm chloride (HCl) because I read on a plating forum that chloride ions inhibit dendrites, which is good for growing larger nodules.
The crystals take about 2 days to grow.
Here are some pictures, and I made a video here if you want to see more!
[Edited on 18-12-2014 by I Like Dots]
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