Chemistry

I was thinking ... why not make a thread where everyone can put great sites about the periodic table. Here are already some great sites. (**** = EXTREMELY GOOD, *** = VERY GOOD, ** = GOOD, * = NORMAL) **** http://www.vanderkrogt.net/elements/index.html Fantastic site !! You will find this site useful not only for the origins (etymology) of element names, but also for translations of each element name into numerous other languages. **** http://homepage.mac.com/dtrapp/Elements/mineral.html Origins of the element names. Very nice !!!! **** http://www.element-collection.com/index.html The Most Beautiful Periodic Table Displays in the World ! Great site for elem…

The Basics (and a bit more) about element collecting So, you want to start your own collection of elements, the noble building blocks of the universe? Great! First you might want to define what sort you prefer; elements in their everyday use form (spark plugs, lightbulbs, nuclear reactors), perhaps minerals with interesting elements in them or pure (+99%) lab/reagent grade samples, or a mix of these. Some providers to get you started: Red Green and Blue Company’s Element Collection page, www.element-collection.com If you’re lazy, or just want to get a brilliant assortment of ALL naturally occurring elements straight from hydrogen (1) to uranium (92). RGB also…

Hi everyone! I have talked with woelen about this and he thinks its a good idea so here goes. This thread is for chemistry links and information that could be useful to other people. Books and useful information are also welcome. Links from the forums: Reference: Collecting elements - Lots of information about buying and collecting elements. Hazardous Materials and Synths - Always read before posting something potentially dangerous. The periodic table - Lots of periodic table links. A latex tutorial - A lot of info on how to use Latex in the SFN forum software, nice for formulas, equations and so on. Making Things / Experiments: …

I've created a chemistry dictionary for use in Microsoft Word and OpenOffice.org Writer. It can be downloaded here: http://www.chemspy.com/chemistry-news/open-access-organic-dictionary.html Right now (2/11/08) it only has US spellings, but that is an update I am working on with priority. I hope this helps my fellow chemists. -AA

I've noticed a trend over the past few months in some of the newer members posting here and in some of the other board, which is that they appear to think that they have the right to information without anyone questioning what they plan to do with it. So I thought I would post this thread, which more or less reiterates some of the T&C as well as various member posts. Many of the people who answer questions in this forum are professionals, students at university/college/etc., or well informed hobbyists. As such, when people ask questions here, we have a responsibility to ensure we are not providing them information that could potentially lead to the production of …

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I heard, molecules only at the surface of the liquid evaporate. But do the molecules below the surface of the liquid evaporate? Suppose we heat a container containing a liquid from the bottom. So molecules at the bottom of the container will have higher kinetic energy than the molecules on the surface. How will the molecules on the bottom escape as vapours?

Please post and contribute Chemistry wallpapers here in this thread:

I learned on this forum that if one wants to neutralize bleach one can add hydrogen peroxide. Useful if one wants to clean up after a bleach spill or clear a washing machine in a laundromat with oxyclean before putting their clothes in. The post said that one gets salt, water, and oxygen. My question, is this an endothermic, exothermic, or neutral reaction. Would it be safe to rinse ones hands in H2O2 after using NaOCl, or is one risking harm?

I watched a tv show and someone on the show said that theres a theory that if you can combine boron, argon, gallium and indium into a solor cell it would be possible to harness 100% of the suns energy. I know its a show but I just wanted to know is this a true theory or is it just completly false and theres so such history of BARGAIN. Cheers.

Hi. I'm wondering what the reaction is between KNO3(potassium nitrate or saltpetre) and sugar is. Im not in chemistry currently and would not understand any formulas but a normal non scientific answer would be nice. Like, How does it work? What is happening, What are the different ingredients for? Thanks Erik

Hi Everyone Often, when I am looking at Nutrition Facts labels, I find that the totals given for the different types of carbohydrate listed in the carbohydrate section do not fully add up to the total of all carbohydrates. This suggest to me that there are one or more types of carbohydrate which never get listed. Can anyone here therefore tell me if there are any carbohydrates which do not fall under any of the following four categories: Sugars, Fibers, Starches and Polyols. Thank you very much. Kind regards Tim

i read somewhere with vinegar and salt... but it seems unlikley and if its true.. iodized salt or un iodized slats?

Does anyone know how to make a passable to good quality ferrofluid (magnetorheological fluid (sp?))? I know of the crude iron filling to vegetable oil method, but I've heard that it doesn't work. Are there better methods? Thanks.

i want to start making ethanol on a small scale and was wondering how to get it to gel.

I keep hearing that windows filter Sun UV rays? some say its 99% others say its 50%, I know windows filter UV-B, but not all of UV-A. Lets say are controlled factor is a sunny morning (fall-winter season in Canada) morning when UV's are the weakest, and fall-winter when there even weaker. Would UV penetrate through a window? If so lets say I filter it by covering the window with construction paper (material used for shipping envelopes)? How strong would the UV Rays be if even existent? Would any of the following below be effected? reason why I want too know -Having a bed for a babe next to a window in the early morning? -People with sensitive skin - fear of Indoor i…

hi, im new here and can anyone of you tell me why nails react the way it does when it interacts with copper (II) chloride? thanks

Bros i wanna know what will be the the result. I added NaOH with water and hope i made it saturated cuz i mixed em till nothing more dissolved in it. Then i put a piece of CuSO4 and they reacted very rapidly and the solution became blue and i saw a gas was emmited. Any Ideas?????

I've searched all over the place, and i can't find it. So does anyone know what the flame temperature of isopropyl (rubbing) alcohol is? P.S. Doesn't matter if it's 70%, 99%, or 100%

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Hi all, Basic question. Is it possible to freeze crude oil or engine oil? If so, how? If not, why? Have had some engine oil in my domestic freezer for roughly 24 hours in a small container. Seems to be getting thicker, doesn't look like it will ever freeze though. Just an experiment for arts sake. Thanks,

Where can i buy chemicals? (apart from ebay)

Whist reading a book on how nuclear fusion takes place in stars I noted that 4 hydrogen atoms are converted 1 Helium atom with the resulting mass difference being converted into energy via E = mc^2. In their calculation (ignoring the mass of the electron) they gave the mass of 4 hydrogen atoms as 6.692 x 10^-27kg which I concur with as 1 proton = 1.673 x 10^-27kg therefore 4 protons = 4 x 1.673 x 10^-27kg = 6.692 x 10^-27kg But it's the mass of the He atom that I'm unsure about. It states in the book that the mass of the He atom = 6.645 x 10^-27kg. However I understand a (normal) He atom (again ignoring the mass of the electrons) to comprise of 2 protons & …

what is the complete ionic equation of copper wire once put into a bunsen burner's flame. PLEASE HELP!!

This Saturday I am going on a one week campout. Due to fire hazards, we are not allowed to bring any fireworks to the campout on the 4th of July. But, since it will be the fourth, the scout leaders have said that we will have a contest to see who can build a fire in the most creative way. But the conditions are: 1. It cannot be explosive 2. It cannot create any hazardous materials such as chlorine or molten iron. 3. You have to be able to buy the ingredients from a local walk-in store. Is there any fun experiments that make fire that I could use? Btw, it would help if I could get some idea's before this Saturday. Thanks a million.