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Author: Subject: Interesting test of how well you know your labware
Dr.Bob
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[*] posted on 26-3-2015 at 11:20
Interesting test of how well you know your labware


http://www.compoundchem.com/glasswarequiz/

I got a 96%, but they have one graphic that is terrible, so it should not count. But I had to guess a few of them, but could elimate most answers, so not too hard. But it is an amusing test.
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DFliyerz
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[*] posted on 26-3-2015 at 11:40


Very fun!
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morganbw
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[*] posted on 26-3-2015 at 12:27


Thank you for that.
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Sulaiman
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[*] posted on 26-3-2015 at 12:29


I got 93%,
one mistake (Friedrich's condenser, not Graham)
one correct guess (Straus flask)
one wrong guess (Kjeldahl flask)

does anyone still use thistle funnels?
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[*] posted on 26-3-2015 at 13:07


Argh! I got one wrong! I meant to click on another but missed it! :-S
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The Volatile Chemist
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[*] posted on 26-3-2015 at 14:08


I got a 76%, but then again, according to the world's standards (not those at SM) I'm doing OK having only taken Honors Chem. I only guessed on 2. I just generally mistook a few of them. Real pictures would've been better.



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[*] posted on 26-3-2015 at 14:30


Got a 96%, missed Strauss flask, as I had never heard of it before. Really cool quiz though! Compound Interest has some nice stuff.



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The Volatile Chemist
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[*] posted on 26-3-2015 at 14:39


I'd never heard of them before. But the quiz was nice. I missed volumetric flask b/c it looked more Florence style...



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aga
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[*] posted on 26-3-2015 at 14:49


I got 76%. Damnit !

The drawing of a Vigreux was nothing like the two i have.

The others i simply got wrong because i did not know.

We'll never mention the two or three i got right by guessing, ever ...

[Edited on 26-3-2015 by aga]




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[*] posted on 26-3-2015 at 15:34


Quote: Originally posted by The Volatile Chemist  
I'd never heard of them before. But the quiz was nice. I missed volumetric flask b/c it looked more Florence style...
It definitely did look rather, err, Florentine, but because it was shown filled halfway up the neck and had a stopper, I inferred that it was supposed to be volumetric. Also not really sure why they put both test tube and boiling tube on there when they look identical.



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blargish
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[*] posted on 26-3-2015 at 15:52


Scored a 93

I've never seen a Straus or Kjeldahl flask before...
There were also a couple that I knew the names of, but didn't know their application! :D
That vigreux column was pretty sketchy




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[*] posted on 26-3-2015 at 16:15


96% for me.
I missed the Schlenk flask, thought it was a Straus. :P

It's funny how much a retort flask is used in chiche depictions of a lab, but it is hardly ever used anymore.




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[*] posted on 26-3-2015 at 16:30


Quote: Originally posted by TheAustralianScientist  
96% for me.
I missed the Schlenk flask, thought it was a Straus. :P

It's funny how much a retort flask is used in chiche depictions of a lab, but it is hardly ever used anymore.


They also tend to be very expensive. I would like to have one, but have held off due to the prices.
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[*] posted on 26-3-2015 at 16:48


i got a 70 and that's not bad at all for never have taken a single chemistry course.i'm sure everyone i know couldn't name a single one of those. i will pat my back now.
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[*] posted on 26-3-2015 at 16:49


I got a 90% not to shabby. but i'll be honest, while I knew what most of the item were some of the pictures were awful. Vigreux picture is awful in my opinon. I have a few of these colums and they look nothinglike that. but nothing on that list would have made sense. thank you for this little test.



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Chemosynthesis
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[*] posted on 26-3-2015 at 17:11


That was fun. I think the test would be much easier if the pictures were larger by default. I managed to get them all, but that one column I presume you guys are talking about was a horrible depiction, not that any of them were all that great. The warnings here made me particularly careful. Using two answers which appear similar to me on that one was just cruel. I also only got the solvent drying flask (trying not to spoil it) because it had been mentioned here. I don't believe I have ever seen one in person, though I have seen solvent stills that were not single piece, attached to inert named lines and the more generalized version of the flask itself which was also a question, so I was able to infer the actual item identity itself since it came up here and was presumably a utilized answer. The flask with the long neck is kind of inspiring for me to try to replicate an early 1900s total nitrogen content analyses I had been putting off, though I don't own on specifically for that yet. Not sure how necessary a specific length is.

Additionally, there was one response that wasn't utilized that threw me. I knew it wasn't the answer, but I didn't know what it was. I don't want to use the name, again, due to spoilers, but it is a flask with indentions on it. I have seen them lying around labs before, but was not really sure what they are used for until I searched the Royal Society of Chemistry's site and found they were developed for organosodium chemistry. Very interesting.
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[*] posted on 26-3-2015 at 18:38


Very good link. Don't do just the test and leave. Look at the very large number of articles and information, click on Archives and
Downloads. Spend some time studying what they have on the site. I had to bookmark it as it will take a long time to get through so much interesting information.




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[*] posted on 26-3-2015 at 18:55


missed the Friedrich's condenser :(




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[*] posted on 26-3-2015 at 23:34


wow, what a great website, thank you for posting that. ive been looking at that website for the last 2 hours!
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[*] posted on 26-3-2015 at 23:41


93%
Got my condensers mixed up. I never call them by their name xD

I got the graph that went with it earlier in the mail. I have a subscription to CI's newsletter :)




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Dr.Bob
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[*] posted on 27-3-2015 at 04:57


Their Freidrich's is not drawn correctly, it shows water coils, but a true Freidrich's has only one main water tube with swirls in it, so they are not really correct either. But their site is very nice, and I had never seen it before. Glad it was helpful.
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[*] posted on 27-3-2015 at 08:54


93%. I've away's worked with improvised apparatus, so I don't know all of the names for glassware. They should have used real pictures, I got at least one wrong because it looked different than mine.

[Edited on 27-3-2015 by Molecular Manipulations]




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[*] posted on 27-3-2015 at 09:00


96%

Had to guess on the Straus flask question, guessed incorrectly. I have always called those 'solvent flasks.'

+1 to Dr. Bob on the Freidrichs condenser drawing. The 105 deg angled take-off was the giveaway. Otherwise it's just a coil condenser.




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[*] posted on 27-3-2015 at 09:31


Quote: Originally posted by blargish  
Scored a 93

I've never seen a Straus or Kjeldahl flask before...
There were also a couple that I knew the names of, but didn't know their application! :D
That vigreux column was pretty sketchy

Lol, I like the pun at the end :) (sketchy)
I knew what a kjeldahl flask was b/c I'd seen one on Elemental Scientific (Thanks Tom Holm! :))




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[*] posted on 28-3-2015 at 06:40


Kjeldahl flasks are primarily used in the brewing industry, as that's what they were invented for (Kjeldahl was the lab manager for the Carlsberg brewery), as well as other food industries. It just so happens that my parents work at a brewery, and I have familiarized myself with the analysis procedures run in their lab, one of which is called TKN, or total Kjeldahl nitrogen. The process involves first digesting the organic substance to be tested using sulfuric acid and potassium permanganate, to convert all of the nitrogen to ammonium, then raising the pH to convert the ammonium to ammonia, then distilling the ammonia (using a Kjeldahl flask as the boiling flask, although I'm not entirely sure why this is important) to make a clean solution, which is then titrated, to determine the total moles of organic nitrogen in the sample.



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