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Chemistry Sets for Adults?
An Anonymous Coward asks "I've been pursuing a few different lines of study, to refresh myself in basic sciences before I return to school. Right now I am reading up on Chemistry, and thought it would be fun to acquire a chemistry set just to play around with and maybe learn a few things from. Do any science geeks here have any suggestions?" My childhood garage probably still has purple and black stains all over it (lucky I was wearing glasses). 300 in one electronics kits, anyone?
When i was in Orgo chem the *best* and coolest thing we did was extract limoene (orange oil). But you need reflux glassware for it.. but i'll tell ya the stuff smells great. and the practical upshot is that you can use it and other essental oils as food flavorings
Exactly - that was the experience I had with my old 300-in-1 chemistry set about 27 years ago.
I did 30 pages of book/guided stuff. E.g. filtering a sand and salt solution, then spending 2 hours getting the salt out of the solution... at the end, guess what? I had salt again!!! Gee, that was fun.
I switched to my own guided experiments soon after that: KnO3 is cool, magnesium burns pretty well, sulfur smells bad, but hydrogen sulphide is even better! My father (a chemist) banished my experiments to the garage.
Next month, I told my parents I needed a pound of sodium chlorate as a desiccant. My father managed to keep a straight face, but bought it for me anyway.
Many more self-directed experiments were performed, and I found myself learning in leaps and bounds: I learned about the surface area of reactants when I thoughtlessly substituted powdered charcoal for granulated sugar in a simple propulsion experiment. Haha, skin and hair grow back.
Chemistry is cool, but make sure your set has fun compounds... I mean, what the hell fun is copper sulphate, etc?
Also, keep a lab book: it makes for pretty fun reading later in life ("4oz nitrocellulose," what was I thinking?) and is helpful if you screw up and the doctor/bomb-disposal unit needs to figure out what was going on.
Get into developing and printing your own photos. You know, the old analog kind. Even better, study some old antique photo processes like Cyanotype or Platinography. I make my own photo papers using these antique methods, and it is satisfying enough to keep me interested, and I was an Honors Chem major until I switched to art, majoring in photography).
Making your own printing papers and photochems is a ton of fun, and yields tangible results (unlike most things you could do with a chemistry set).
One of the most interesting and rewarding reactions you can study as an amateur is mirror silvering using Tollens' reagent. I had an arc lamp reflector that needed resilvering, and decided to do it myself.
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After a lot of web research, I found that this website had the best directions (and the best safety warnings!):
http://lerch.no-ip.com/atm/Silver.htm
The only chemicals I had any trouble finding were silver nitrate crystals, which can be purchased from photography supply stores, such as:
http://www.photoformulary.com/
or ebay, and concentrated nitric acid, which can be purchased from lithography supply stores, such as:
http://www.rembrandtgraphicarts.com/13_rga_cat.
The hazmat shipping charge for the nitric acid will exceed the cost of the chemical.
The process is somewhat complex, involves a number of stages, but isn't too difficult to do. It's an interesting reaction to watch, and the result is cool and useful. I created a perfect mirror coating on the inside of a bottle on the second try, and successfully coated my reflector mirror immediately thereafter.
Everything worked for me, except that I found that I had to heat the muriatic acid in order to make the solder dissolve when creating the sensitizing solution.
That's my recommended interesting experiment.