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folder

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Everything posted by folder

  1. I've bought stuff from them before. They have good prices.
  2. General Chemistry by Linus Pauling. Good in depth explanations of many chemistry topics. - http://www.amazon.com/exec/obidos/tg/detail/-/0486656225/qid=1131063688/sr=8-1/ref=pd_bbs_1/103-3007256-0599005?v=glance&s=books&n=507846
  3. Very interesting. It's curious how ICl is similar to bromine.
  4. The lead will plate out first if you try electrolysis. It would probably be easier to precipitate it with HCl than to try and determine when it is all out of the solution.
  5. Oh boy, there's so many I could choose. Copper is great for its color and malleability and colorful compounds, Aluminum is great for its light weight, Zinc is fun for its castability and non-poisionousness (is that a word?).
  6. I'll bet there isn't any glue, or very little, it's probably just the magnet holding on for dear life. I'd take a pair of pliers and carefully pull it off.
  7. Heh, mine was off by about five miles.
  8. [math] \ce{MnO + H2SO4 -> MnSO4 + H2O} [/math] Cool, thanks for the guide.
  9. You'll like Chemistry, its very interesting to learn and even more fun to put to practical use
  10. How much formal chemistry education do you have? You could make a battery with all kinds of things (Iron Oxide and aluminum will work) The Aluminum will reduce the Iron Oxide, making Iron and Aluminum Oxide.
  11. If you can remove it and if it is a pure metal (no iron or other metals attached that cannot easily be removed), you could place it into a tank of water that is completely full, and collect the amount of water that is displaced out of the tank. Then, weigh the object, and the mass divided by the volume of water it displaced will be its density, which you can compare to the densities of Aluminum (2700kg/cubic meter) and Magnesium (1738 kg/cubic meter).
  12. No joke- http://images.similarminds.com/leader/5.jpg Einstein
  13. I have a silicon chunk, and it has a neat metallic blue color too.
  14. It is incredibly hard to melt salt. Two propane torches on all the way could not melt much more than the surface of some I was trying to melt.
  15. You might want to take apart some batteries to get the carbon rods in the center to use as electrodes, because if you use copper or iron electrodes, they can react with the oxygen produced to make copper or iron oxides which muck up the solution (which may also be why you only get one stream of bubbles, the oxygen is reacting with the electrodes). The carbon should be relatively nonreactive, at most making CO2 which is a gas and therefore not going to muck up the solution.
  16. An astronaut, Jerry Ross, who has been on 7 shuttle missions grew up here.
  17. For non-scientific measurements, I like the old system. Mabye it's just because I grew up with it, and am familiar with it. Quarts, Pints, Cups, Tablespoons, and Teaspoons are convienient for cooking, the mile is nice for distances, weight in pounds, and Fahrenheit degrees are nice. I would really have a hard time adjusting to the metric system for those kinds of things. Scientific measurements are a different thing, and the metric system is very nice for them.
  18. That stuff is fun. It's fun to show people that water can start a fire.
  19. My physics teacher puts a fact of the day on the board each day and he put that on the board last Thursday.
  20. I'm sure the batteries are well sealed because if they weren't, just the oxygen in the atmosphere could oxidize about all the lithium in the battery away to Li2O in a matter of hours or days.
  21. You can get hydrogen from water with lithium, it's neat to watch a metal just disappear into a cup of water amid a bunch of hydrogen bubbles.
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