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Brain&Force
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[*] posted on 5-10-2014 at 16:25


Quote: Originally posted by The Volatile Chemist  
Hi Jylliana!
Welcome to SM!
Hope you enjoy using the site! If you have any questions, U2U (kinda like PM-ing) someone. Nice picture, too!
I must comment, glad to see you are on the site! There are not very many females that are interested in chemistry, let alone state their gender.
Regardless of stereotypes, enjoy the site. Is there anything about chemistry you are particularly interested in? Specific branches?

-Nathan, The Volatile Chemist


Allow me to extend that welcome - we need more women not in professional STEM (TIL female astronomers and biologists outnumber male astronomers and biologists), but in hobby STEM, as that's where the interest grows.

Feel free to use the Sciencemadness Wikias a reference (and feel free to edit it as well). The thread discussing it has been topped and resides in Miscellaneous.

There's also the Rador Labs collaborative chemistry outreach project, which needs more interest and videos. Shoot me a U2U if you want the passwords.

Enjoy the site!

-B&F




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The Volatile Chemist
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[*] posted on 6-10-2014 at 16:17


B&F, always ready to advertise the resources he's made :)
Just kidding. If you need any help on how to use the site, just ask.




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kristofvagyok
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[*] posted on 11-10-2014 at 02:47





Found a 5000 cm3 Erlenmeyer flask written 0,5M NaOH solution of it and found these nice large crystals at the bottom. Single crystals of sodium hydrogencarbonate/carbonate.




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Jylliana92
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[*] posted on 22-10-2014 at 10:13


Quote: Originally posted by The Volatile Chemist  
Hi Jylliana!
Welcome to SM!
Hope you enjoy using the site! If you have any questions, U2U (kinda like PM-ing) someone. Nice picture, too!
I must comment, glad to see you are on the site! There are not very many females that are interested in chemistry, let alone state their gender.
Regardless of stereotypes, enjoy the site. Is there anything about chemistry you are particularly interested in? Specific branches?

-Nathan, The Volatile Chemist


Hey Nathan & B&F,

Thanks for the welcome. I was not aware I was special lol :P
I've always seen myself as 'one of the boys'... in school I was the only female in my class. Never thought much of it.
I mostly like the 'kewl' chemistry, the spectacular, dramatic reactions(as long as it's safe. I tend to have a little too much 'respect' for some chemicals, almost fear them... not healthy, especially with my job, where I handle those chems almost daily.), and I see beauty in the tiniest reactions and displays, like the lead iodide crystals, or a water droplet skating off the hot plate(Leidenfrost effect ftw:cool: ).
I work as a School Science Tech on a high school. I assist the teachers with their practical classes. My background is Analytical Chemistry(chromatografy, spectrometry that sort of stuff).
I love teaching, and my goal is to make every student love chemistry as much as I love it :D

Rador Labs sound like an awesome initiative. Fighting chemophobia through education, always a good idea :D



[Edited on 22-10-2014 by Jylliana92]




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HeYBrO
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[*] posted on 25-10-2014 at 14:23


Tried bfesser's Copper(II) Aspirinate Synthesis
Which turned out quite well.



IMG_2162.jpg - 1.9MB IMG_2187.jpg - 1MB IMG_2220.jpg - 1.8MB




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Texium (zts16)
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[*] posted on 27-10-2014 at 14:34


Here's some copper(II) chloride crystals that I set out to crystallize months ago but wasn't able to retrieve until today, because they had been guarded by angry yellow jackets until now.

IMGP0369.JPG - 2.2MB




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The Volatile Chemist
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[*] posted on 27-10-2014 at 16:25


Nice! Were the yellow-jackets attracted to the crystals? :)



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Brain&Force
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[*] posted on 27-10-2014 at 17:16


Beautiful! I love how the copper chloride crystals have green tints - did you grow them in excess HCl?



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pneumatician
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[*] posted on 28-10-2014 at 17:23


now a little video

http://www.youtube.com/watch?v=ZTb640Rbq74
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[*] posted on 28-10-2014 at 17:40


Quote: Originally posted by Brain&Force  
Beautiful! I love how the copper chloride crystals have green tints - did you grow them in excess HCl?
Yes, there was a little bit of HCl. I didn't want them to be too green. The first batch that I made was, and I didn't think it looked representative of the compound. I like the way these turned out since they're mostly aqua colored with some green highlights. Especially cool is that the green only becomes visible when you hold it up to the light.



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[*] posted on 28-10-2014 at 22:08


:D

[Edited on 29-10-2014 by wish i had a kraken!!!]

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The Volatile Chemist
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[*] posted on 31-10-2014 at 05:37


Quote: Originally posted by Brain&Force  
Beautiful! I love how the copper chloride crystals have green tints - did you grow them in excess HCl?

It appears they were grown in excess HCl, but at least some of that excess evaporated off, because the crystal color changes partway. Not that basement evaporation (what I do) is better than outside. :)




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Jylliana
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[*] posted on 3-11-2014 at 00:15



Strontium Chloride.


Strontium Chloride transferred to a vial.


Copper Chloride in a petridish, crystallized from a mixture of 50% acetone and 50% water.

[Edited on 3-11-2014 by Jylliana]




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Al, Br, Cu, Hg, S, C, Ag, Na, Pb, I, Cd, Ga, P, Mg, Fe, Be, Au, Bi, Si.
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Eddygp
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[*] posted on 3-11-2014 at 10:10


Those are LARGE pictures... I liked the second one, because it has a sort of gooey feeling to it, while obviously being a group of crystals.



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[*] posted on 3-11-2014 at 16:49


Nice work Jylliana! Inspiring! I like the strontium chloride especially! Looks rather pure, too! I might recommend the acetate as well, it, too, has a nice looking crystal structure.



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Brain&Force
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[*] posted on 13-11-2014 at 10:33


<img src="https://pbs.twimg.com/media/B2DdPYTCQAAExs0.jpg" title="Can someone find the transition point of pyranine for me?" width=800>

To celebrate 1000 posts and a year on the forum, here is one of my favorite pictures of all time: pyranine in neutral to progressively more acidic environments. The dye's fluorescence changes from green to blue.

I may make a video series regarding fluorescent pH indicators from highlighters.




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[*] posted on 13-11-2014 at 20:12


I work in a Drosophila lab, and in particular I've been doing some scanning electron microscopy. Here's some cool stuff I've seen:

The samples get sputter-coated so that charge doesn't build up on a nonconductive surface. Basically I blast a fly in the face with plasma.

plasma_in_the_face.jpg - 110kB

Here's the microscope itself:

scope.jpg - 64kB

Things get pretty Lovecraftian at this scale. Eeesh.

TaxonF_mouth_400x.jpg - 486kB

In the back room of the SEM lab: Oh, you know, osmium tetroxide, sitting on the lab bench, chillin'.
osmium tetroxide.jpg - 42kB

And an open bottle of this lovely substance.
cacodyal.jpg - 54kB

(There was also a bottle of 'uranyl acetate waste', but it's not very photogenic unless you really like the color yellow.)





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[*] posted on 14-11-2014 at 00:50


From the look of that can, that's an utterly ridiculous amount of osmium tetroxide to have. The picture makes it look like that's a 1.5L can. Surely I am missing something here?
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[*] posted on 14-11-2014 at 03:47


Doesn't it say 250mg on the left top? These cans always contain a load of packing material against breaking.
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[*] posted on 14-11-2014 at 05:13


That's crazy. How much did THAT cost? And what's wrong with permanganate? Or do you always recover the osmium Tetroxide?



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[*] posted on 14-11-2014 at 08:33


According to Sigma 64 euro.
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[*] posted on 14-11-2014 at 09:21


Quote: Originally posted by Tsjerk  
Doesn't it say 250mg on the left top? These cans always contain a load of packing material against breaking.


Yes- the can's not full of osmium tetroxide, it's full of vermiculite. In the middle of the vermiculite, there's a small bottle of OsO4.




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[*] posted on 20-11-2014 at 14:24


The condenser water was too cold during a distillation of benzene. It froze in the condenser, swapping the cold water for cool water melted it right away.


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[*] posted on 21-11-2014 at 06:40


Quote: Originally posted by Mailinmypocket  
The condenser water was too cold during a distillation of benzene. It froze in the condenser, swapping the cold water for cool water melted it right away.



Wow, that's crazy. I never thought of benzene as being something that could do that, but I guess it makes sense. You could almost put a 'cold finger' (a piece of glassware for all who do not know) over such a flask, though I supposed it wouldn't be removed enough from the heat source.




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[*] posted on 21-11-2014 at 08:45


The cooling water had ice in it and I forgot about benzene having a melting point of about 5.5 Celsius. A cold finger probably would have some benzene solidify onto it but in this case benzene was being synthesized so the temperature in the steel vessel obviously would be too high for a cold finger to even remotely work. Making this stuff is tedious by the way... Fill reaction vessel, heat, distill, empty clinker stuff, repeat. Ugh.
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