RyanJ

Anyone ever watched Brainiac? Once they were testing what was really unbreakable. One set of plastic containers were impossibly tough - they survived and explosion, being hit by a bat - not a scratch, crack nor dent. Impressive stuff. Cheers, Ryan Jones

Hi everyone! Please post all contributions you have here so a moderator can add them to the first post which is locked to keep it clean. Also, please make shure that any links and information complies with the Hazardous Materials and Synths rules or it will not be added and you will probably get a warning. Thanks for your contributions! Cheers, Ryan Jones

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: Making hydrochloric acid - How to make hydrochloric acid. Phosphorus extraction - How to extract phosphorus. Fluorine - Lots of information about fluorine. Hydrogen peroxide - Concentrating hydrogen peroxide. Making nitric acid - An interesting discussion about making nitric acid. Aluminium powder - How to make aluminium powder at home. Be very careful with old potassium - A warning about old potassium. Iodine "tincture" - Seperating iodine from iodine tincture. Bromine - Lots of information about bromine. Selenium allotropes - All about selenium allotropes. Making Sodium Iodide - Ideas for making sodium iodide. Tin extraction - Ideas for extracting tin. Making sulphuric acid - An interesting discussion about making sulphuric acid. Purple gold - How to make purple gold! A simply shocking source of sodium metal - An amazing source of pure sodium metal. Making dimanganese heptoxide - Experiment with the extremely sensitive Mn2O7 Interesting Synths - Some interesting synths, nothing very dangerous. Interesting threads: Strongest possible acid - An interesting discussion about the strongest possible acid. PyroChemistry - PyroChemistry discussion #1. Collecting elements - An interesting discussion thread about collecting elements. Thermite - A big discussion thread about thermites. Bromine is too sweet - An interesting discussion about bromine. Inert metals - A discussion about the inert metals (ends up in a debate!). The king of the elements - A debate about which element is the best. Good and bad chemical smells - A collection of good / bad smelling chemicals - add your own! Glass is a fluid - Is glass a liquid or a solid? Strongest acid known - An interesting discussion about the strongest acid known. Strongest oxidiation & reducing agents - An interesting discussion about the strongest oxidiation & reducing agents known. Official pyrotechnics thread - PyroChemistry discussion #2. Chemicals with funny names - Very funny! What is the most indestructible solid known to man? - An interesting debate and still do conclusion! General links: Wikipedia chemistry section - Information and more information... what more can I say? IUPAC nomenclature - The standards for naming compounds, ions and just about everything else in chemistry. The chemistry archive - Links to lots of sites... very useful. Writing SMILES - Very useful for organic chemistry, makes writing structures simple. Woelen's site - Always useful for reference and looking up experiments. General chemistry stuff - Useful ifnroamtion and articles, some interesting things to read. Compound information lookup - Very useful for research. Chemistry guide - Brilliant resource for learning about chemistry. Functional group reactions - Very useful quick reference resource. Chemical glossary - Another useful lookup resource. Chemistry books online - Another great idea from Wikibooks. MSDS data sheet lookup - Great safety information (Invaluable). Household products database - Always interesting to know what things contain! Table of nuclides - Great resource for isotope research. Chemdex - Lots of links and information. Chemistry articles - Always an interesting read. Science madness: online books - More books online! About chemistry - Great online reference. General chemistry online - A great online tutorial. Chemistry coach - Another great online tutorial. Water - All you ever wanted to know about water and more! Flash based periodic table - a very interesting and unique way to display the perodic table. Chemical profiles - Great for chemical research with information on lots of compounds. Webqc's info on elements - a nice summary of properties of elements, which links to individual articles about the elements. Useful Books: CRC Handbook of chemistry and physics Chemistry of the elements Organic chemistry Inorganic chemistry second edition Inorganic chemistry by Shrier & Atkins Chemistry third edition General Chemistry Software: ChemSketch 8.0 - Drawing molecules, free. XDrawChem 1.9.9 - Drawing molecules, free. ChemDraw 10.0 - Drawing molecules, paid. PubChem online molecule editor - Drawing molecules, online. Cheers and thanks for contributing! Ryan Jones

Well... atleast they don't tell you plain out how to make the stuff, most of the time they don't even use its real names but it is idiotic because it basially says that playing with fire is fun. The "don't try this at home" warning has the opposite effect... Cheers, Ryan Jones

If you want crap look at a show called Brainiac. Never seen so much science rubbish in one place Petrol DOES NOT explode. Dynamite is not detonated by heat (e.g. not by a burning wick). Sodium Carbonate is [ce]Na2CO3[/ce] NOT [ce]NaNO3[/ce]! ... and the list goes on an on! Cheers, Ryan Jones

Yes but those are not much good as they would be quite solid long before chlorine would @Forensicmad: There are others, here are a few I can think of: Nitric oxide ([ce]NO[/ce]) Nitrogen dioxide ([ce]NO2[/ce]) Ozone ([ce]O3[/ce]) Thats all I have off the top of my head. Cheers, Ryan Jones

Indeed - always the same, it will also be interesting to see a book about a planet that has chlorine and or fluorine in the atomosphere. Not somewhere I'd like to live Cheers, Ryan Jones

Welcome to SFN! Yes there are such chemicals when you consider combustion as oxidation. Lets take an example, if we were to burn hydrogen in an oxygen atmosphere the 2 hydrogens each "donate" 1 electron to the oxygen atom - they have lost electrons and have therefor been oxidised. The reverse if true for oxygen which has been reduced. So the answer is a simply yes - elements that are very electronegative will allow you to "burn" or oxidise things. Examples could be fluorine and chlorine for example Good luck with your book! Ryan Jones

HHmm - you make some good points! Maybe it would be better to put it in this way: Time acts more like a spacial direction inside the black hole then outside. That would allow for the quantum tunnelling effect. The odd thing is it does seem like a spacial dimension because it does have a direction. Outside a black hole there is no direction in which you can point to specify where time is going but inside the hole you could (Presuming you knew where the center was). Any comments on that? If you would not consider it that way then how do you see it? Cheers, Ryan Jones

Idea about black holes... 4 spacial dimensions? This is an interesting idea I had today while re-reading The Elegant Universe. As one passes through the event horizon of a black hole they are destined to meet the singularity - there is no way to avoid it so their fate is destined to end there. Could this mean that time could be thought of as a spacial direction heading in the direction of the singularity in essence giving the black hole 4 spacial dimensions but no time dimension? Thanks for the replies, Ryan Jones

Yes indeed... cold is bad enough - I'm not even shure you'd be able to tell the difference

^ Second that. People who risk their lives poshing the borders of human knowledge at the risk of their lives deserve recognition! Pitty... messing with ethylene is a bad idea Cheers, Ryan Jones

Yes well there we go. HCl can't be more harmful that eating an unknown substance so I don't really see a problem anyway. Cheers, Ryan Jones

Here are a few more: 1) http://arxiv.org/archive/math 1) Lots of math papers (Very interesting stuff). 2) http://www.understandingcalculus.com/ 2) Have not read it all yet but what I have read was good 2) http://en.wikibooks.org/wiki/Wikibooks:Mathematics_bookshelf 2) Interesting books online, useful for reference. Cheers, Ryan Jones

It is indeed, its used as a warfare agent for just that reason. How would you like HCl forming in your lungs... I don't fancy the idea much I have also smelled the stuff, anyone who has been to a pool has... I agree with rthmjohn - don't inhail it! Could be worse, it could be fluorine... Cheers, Ryan Jones

The black hole would simply destroy the string its self - the string can't actually "touch" it without getting pulled in its self. Sorry - should have made that clear. This is not normal evaporation' date=' it can't be stopped by any known process. If your interested this may help: http://en.wikipedia.org/wiki/Hawking_radiation Black holes are not really choosey - they simply pull in anything that gets close too them - even if all the light is being pulled in the black hole will gladly "eat" the string, matter, energy arround it Cheers, Ryan Jones

Depends on how you define a T.O.E. Really the theory should be able to predict the state of the universe at any time; past, present or future. Seeing as that is not possible how can we have a true theory of everything? Its not possible because of the uncertainly principal, we would need to know both the speed and position and we can't thanks to the Uncertainty principle. Cheers, Ryan Jones

^ I agree with that completly. Think about it, all those hundreds of millions of books, computer stored information etc. and guessing by the fact we learn loads of new things every day we can't even be close to the ultimate knowledge otherwise we would be learning less and less not more and more as it appears we currently are. Cheers, Ryan Jones