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SodiumSodium is the chemical element in the periodic table that has the symbol Na (''Natrium'' in Latin) and atomic number 11. Sodium is a soft, waxy, silvery reactive metal belonging to the alkali metals that is abundant in natural compounds (especially halite). It is highly reactive, burns with a yellow flame, reacts violently with water and oxidation in air (which is why pure sodium must be stored in oil). == Notable characteristics == Like the other alkali metals, sodium is a soft, light-weight, silvery white, reactive element that is never found as a pure element in nature. Sodium floats in water, as well as decomposing it to release hydrogen gas and hydroxide ions. If ground to a fine enough powder, sodium will ignite spontaneously in water. However, it does not normally ignite in air below 388 kelvins. Under extreme pressure, sodium departs from standard rules for changing to a liquid state. Most materials need more thermal energy to melt under pressure than they do at normal atmospheric pressure. This is due to the fact that the molecules are packed closer together and have less room to move. At a pressure of 30 gigapascals (300,000 times sea level atmospheric pressure), sodium's melting temperature begins to drop. At around 100 gigapascals, sodium will melt at near room temperature. A possible explanation for the abberant behavior of sodium is that this element has one free electron that is pushed closer to the other 10 electrons when placed under pressure forcing interaction that is not normally present. While under pressure, solid sodium assumes several odd crystal structures suggesting that the liquid might have unusual properties such as Superconductivity or Superfluid. (Gregoryanz, ''et al.'', 2005) == Applications == Sodium in its metallic form is an essential component in the making of esters and in the manufacture of organic compounds. This alkali metal is also a component of sodium chloride (NaCl) which is vital to life. Other uses: *In certain alloys to improve their structure, *In soap (in combination with fatty acids), *To descale (make its surface smooth) metal, and *To purify molten metals. *In sodium vapor lamps, an efficient means of producing light from electricity. *As a heat transfer fluid in some types of nuclear reactors. NaCl, a compound of sodium ions and chloride ions, is an important heat transfer material. == History == Sodium (English language, soda) has long been recognized in compounds, but was not isolated until 1807 by Sir Humphry Davy through the electrolysis of caustic soda. In medieval Europe a compound of sodium with the Latin name of ''sodanum'' was used as a headache remedy. Sodium's symbol, Na, comes for the neo-Latin name for a common sodium compound named ''natrium'', which comes from the Greek language ''nítron'', a kind of natural salt. == Occurrence == Sodium is relatively abundant in stars and the D spectral lines of this element are among the most prominent in star light. Sodium makes up about 2.6% by weight of the Earth's crust making it the fourth most abundant element overall and the most abundant alkali metal. It is now produced commercially through the electrolysis of completely dry fused sodium chloride. This method is less expensive than the previous method of electrolyzing sodium hydroxide. Metallic sodium cost about 15 to 20 US cents per pound (US$0.30/kg to US$0.45/kg) in 1997 but reagent grade (ACS) sodium cost about US$35 per pound (US$75/kg) in 1990. It is the cheapest of all metals by volume. == Compounds == Sodium chloride, better known as common salt, is the most common compound of sodium, but sodium occurs in many other minerals, such as amphibole, cryolite, halite, soda niter, zeolite, etc. Sodium compounds are important to the chemical, glass, metal, paper, petroleum, soap, and textile industries. Soap is generally a sodium salt of certain fatty acids. The sodium compounds that are the most important to industry are common salt (Nachlorine), soda ash (Na2carbonoxygen3), baking soda (NahydrogenCO3), sodium hydroxide (NaOH), sodium nitrate (NanitrogenO3), di- and tri-sodium phosphates, sodium thiosulfate (hypo, Na2sulfur2O3 · 5H2O), and borax (Na2boron4O7 · 10H2O). == Isotopes == There are thirteen isotopes of sodium that have been recognized. The only stable isotope is Na-23. Sodium has two radioactive cosmogenic isotopes (Na-22, half-life = 2.605 years; Na-24, half-life ≈ 15 hours). == Precautions == Sodium's powdered form is highly explosive in water and a poison combined and uncombined with many other elements. This metal should be handled carefully at all times. Sodium must be stored either in an inert Earth's atmosphere, or under mineral oil. ==Physiology and Na ions== Sodium ions play a diverse role in many physiological processes. Excitable cells, for example, rely on the entry of Na+ to cause a depolarization. An example of this is signal transduction in the human central nervous system . ==References== *[http://periodic.lanl.gov/elements/11.html Los Alamos National Laboratory – Sodium] * ==External links== *[http://www.webelements.com/webelements/elements/text/Na/index.html WebElements.com – Sodium] *[http://environmentalchemistry.com/yogi/periodic/Na.html EnvironmentalChemistry.com – Sodium] *[http://www.theodoregray.com/PeriodicTable/Elements/011/index.html The Wooden Periodic Table Table's Entry on Sodium] Chemical elements Alkali metals lv:Nātrijs mi:Konutai simple:Sodium th:โซเดียม SodiumSodium is me. I am 20, English and a second year medical student at Bristol University. Finished revising for end of year exams, I am still in medical school! I have been here since within a year of wikipedia being founded and have written lots of pages on mostly science-y things. SodiumAbout continuum spectra: it's actually pretty complicated, as I understand it. The main component at UV-vis-IR wavelengths is :black body radiation, which comes from thermal movement of charges, but at X-ray wavelengths there is ''bremsstrahlung'' (Breaking radiation, which is caused by electrons decelerating due to atomic nuclei), Compton scattering (photons scattering from electrons), and synchrotron radiation (electrons in magnetic fields). Perhaps it would be better off being explained in a seperate article, with a link from EM Spectra. I'll have a go when I get the time. -- DrBob Hi Sodium: Thanks for the reply, I'll let you know what DrBob reckons... ---- '''Here's the comment, man: I'm going cancel the ":Fundamental Dimensions" revision that you made. Please leave it in place and add a "comment" as I did here. Thanks''' User:little_guru :''Why did you create a comment page just for me, am I that important. :-)? If you replace the revision, rewrite it clearer. It is not obvious what the article is about. 'Fundamtenal dimensions' could exist - I am only doing A-level physics, but the text written on the page was either very obvious or covered elsewhere.'' -- User:sodium ---- :ANSWER:''So what? Can't I creat a comment page just for you? Yes you ARE important like all the wikipedians here...'' You do not create a separate Comment page as well as a Talk, and you don't move somebody elses text there. :''You may be a student, and I may be a teacher. Sometimes to explain really difficult concepts you got to put them in a way that LOOKS obvious, and I can assure you that the SI it's NOT obvious at all...'' The article you wrote was full of unnesecary comment and repitition. It had one point (that you can't add different units), and it listed some of the SI units. The SI units :SI. I don't think you'll find many people attempting to add speed and time. :''Anyway Fundamental is misspelt: it seems that in a subconscious way you underestimate what is fundamental in life.'' Yes obviously, otherwise I wouldn't be spending hours on the internet :-). -- User:sodium ---- :''Those illustrations you added to :Chord are great. How did you make them?'' -- User:GWO Thanks! I actually have a (slightly old) version of Sibelius which I do all my music work on. I save it as bmps then use Corelxara to turn it in to a PNG, adding any text that is needed. I'll be happy to do some more score-illustrations if you (or anybody else) needs any. --user:sodium ----- Thanks for the pointer. How do you think the articles can be combined? --User:riatsala. :''I was going to develop the :figured bass page concentrating on theory of how it is interpreted. Maybe the Basso continuo should be kept to explore the history and its usage by composers, and the figured bass page whould stick with the theory? (By the way, nice work on all the articles you have started, music was starting to get a bit quiet :-) )'' -- User:sodium ---- Sodium, I appreciate your attempts to be a moderating influence in the Christian Anti-Semitism Talk page. I just want to echo what I think RK has been saying. The question of whether Jews can be anti-semites is a matter of semantics. But in my experience, Jews do not hesitate to call "self-hating Jews" anti-semites if they turn their hatred against other Jews. In any event, to say that the authors of the New Testament could not be anti-semites "because" they were Jews is just sophistry. The question is, are there passages in the New Testament that express hatred towards Jews and provoke hatred towards Jews? Like others, you may conclude that the answer is no, that these particular versus do not express or incite hatred. But this is all that matters -- do they, or don't they? It really does not matter who wrote them. Unless, that is, you want to infer intention based on authoriship. This is not a matter of semantics ("by definition" a Jew cannot be an anti-semite) but rather psychology -- a Jew is not capable of hating Judaism, the Jewish people, or Jews. But, as RK observed, in fact there are Jews who are capable of hating Judaism, the Jewish people, and Jews. It doesn't matter what you call them, the point is, the fact that they are Jewish does not in and of itself help us decide whther what they wrote is hateful or not. Finally, although the authors of the New Testament, or most of them, anyway, were born Jews, they were creating a new religion and distancing themselves from the Jewish religion and the Jewish nation -- SR :There is no such thing as an exact definition of a word, and this is where the confusion over the importance of authorship comes from. A definition arises out of how the word is used and obviously different people can use the same words in different ways. I think it is misleading to call Jews who hate Jews antisemites, because to a lot of people an antisemite is one who hates *all* Jews. There is some justification for this view: antisemitism is not simply hatred of Jews, it is the irrational hatred of Jews because of a perceived feature of the Jewish group resulting from their religion/race/economic-status/etc... If someone hates one group of Jews but not another, the feature of this group that they hate does not necessarily emerge from their Jewishness. For example if a person hates a group of Jews that has moved in to his community, he could be said to be an antisemite. But it is more accurate to say that he is an emigrant-hater, because he does not (in my scenario) hate the Jews that stayed behind, whereas he does also hate other non-Jewish emigrants. :Similarly I suppose it could be said that some Jews are antisemites, but this is stretching the definition of antisemitism and is likely to cause confusion--basicly I think should be avoided and more precise wording should be used instead. -- :sodium (BTW, it was not me that commented on whether the writers of the New Testament could be considered antisemites. Considering that the NT was written a time after christianity had been established, I suppose the writers would probably be considered christians not jews.) -------- As everyone probably knows, I agree with Sodium against SR and RK. An antisemite is someone who hates Jews because they are Jews. A Jew can hate some, many, or most other Jews; but they are not anitsemitic, so long as the following conditions hold: (a) they identify themselves (both internally and externally) as Jewish, and (b) they accept the people they hate as also being Jews. Because if those two conditions hold, then they consider both themselves and the people they hate as Jewish, and therefore they do not hate the people they hate because they are Jewish, because otherwise they'd also be hating themselves, which they do not. (Neturei Karta, who RK says are Jewish antisemites, do not hate themselves.) I don't think its psychologically impossible for a Jew to hate themselves because they are Jewish. It probably happens a fair bit. However, I don't think any groups like Neturei Karta hate themselves. In fact, "self-hating Jew" is a favourite weapon of intra-Jewish propaganda (i.e. its a name which Jews use to insult other Jews). Most Jews who get labelled "self-hating Jews" do not hate themselves or their people at all -- they just dare to question certain sacred cows of the Jewish community (e.g. be critical of Israel). And in any case, even if some Jews do hate themselves, this "hatred" is a different phenomena than the hatred exhibited by non-Jewish antisemites, so even Jews which hate themselves and all other Jews are still not antisemites. Non-Jewish antisemites advocate violence against Jews. Find me one "self-hating Jew", which thinks that violence against their own people is a good thing? Find me one "self-hating Jew", which would like to see Jews returned to the ghetto, and would love to wear a yellow star? Find me one "self-hating Jew" who can't wait for Auschwitz to be reopenned so he can be the first victim of Holocaust II? Find me one "self-hating Jew" who thinks that the Protocol of the Elders of Zion is true? I doubt very much you will find any. So, even if some Jews do hate themselves because of their religious/ethnic background, this is a very different phenomena from the hatred which non-Jews exhibit towards Jews, and so it is inaccurate to refer to Jewish self-hatred as antisemitism. -- User:SJK ------------ Hi Sodium, I am fairly new around here so forgive any breach of local etiquette. If you are interested in an opportunity to do one of your excellent chemical diagrams, I just created an initial entry on Vulcanization. The entry would be much clearer with a diagram showing some basic polymer chains of rubber linking to form a longer chain and then the two sulphur atoms forming the crosslink. The reference I checked shows the process as (a) isoprene monomer (I think this is the rubber latex) (b)isoprene polymer (resulting from two isoprene monomer linking end to end) (c) three polymer coil-like chains cross linked with the sulphur. I might be able to photograph/scan the diagram I was referencing and email it to you if this would be useful. Please disregard all of the above if uninterested or busy. user:mirwin :Sorry I have taken so long to reply, I have been very busy with university interviews, all of which seem to have arrived at the same time. I would be happy to do a diagram for vulcanization. I think I have an idea of what is needed but I might take up the offer of a scan if I run in to difficulties. user:sodium ----------------- Hi, from another Bristol Uni wikipedian (you make it 3 I believe) :) You might possibly even have seen me around, especially if you joined the computer society (BITS) as I was manning BITS stall at freshers fair for a fair bit of the time. --User:Imran 23:07 Dec 28, 2002 (UTC) ---- ==Imatinib== My compliments on your fine edits and the nice picture. I'd never imagined someone was going to expand on that page for some time! Impressive work for "a first year medical student". A bunch of medical contributors to Wikipedia has joined forces on User:Jfdwolff/WikiDoc to coordinate efforts to improve Wikipedia's medical side. Your company is most certainly invited. In due course, we'll move everything to a WikiProject, but only after our agenda has assumed some semblance of shape. User:Jfdwolff User:Jfdwolff | User_talk:Jfdwolff 11:22, 23 Apr 2004 (UTC) PS Could you find an image of Imatinib's chemical structure? I've made some myself for pioglitazone and metformin, for example. :Ah, you've refreshed your user page. :Personally, I find Wikipedia work hugely educational. I'm supposed to be locumming around, but it's a bit of a quiet time. Having MRCP Part 1 behind me, there's little organised studying to do. However, Wikipedia has forced me read up details on serpins, G6PD, PPARs and thiazolidinediones! So I agree with you on revision-by-wikipedia-editing. :To join the WikiDoc effort, just add your name to user:Jfdwolff/WikiDoc and see what's happening there... :User:Jfdwolff User:Jfdwolff | User_talk:Jfdwolff 21:36, 24 Apr 2004 (UTC) By the way, the nice diagram on this page (Media:Mechanism imatinib.jpg) is spoiled slightly by being a jpg rather than a lossless format like png. Could you upload a png version? User:Lupin 12:25, 23 May 2004 (UTC) :Seconded. And while you're at it, correct the spelling ''Gleevac'' to ''imatinib'' or ''Glivec'' or ''Gleevec'' :-) User:Jfdwolff | User_talk:Jfdwolff 21:39, 23 May 2004 (UTC) ---- ==Is WikiDoc moving?== Please follow User_talk:Jfdwolff/WikiDoc#Are_we_moving? for some information. User:Jfdwolff User:Jfdwolff | User_talk:Jfdwolff 12:41, 3 May 2004 (UTC) == Article Licensing == Hi, I've User:rambot#Free the Rambot Articles project to get users to Wikipedia:Multi-licensing all of their contributions that they've made to either (1) all U.S. state, county, and city articles or (2) all articles, using the Creative Commons Attribution-Share Alike (''CC-by-sa'') v1.0 and v2.0 Creative Commons Licenses or into the public domain if they prefer. The ''CC-by-sa'' license is a true free documentation license that is similar to Wikipedia's license, the GFDL, but it allows other projects, such as WikiTravel, to use our articles. Since you are among the Wikipedia:List_of_Wikipedians_by_number_of_edits Wikipedians by edits, I was wondering if you would be willing to multi-license all of your contributions or at ''minimum'' those on the geographic articles. Over 90% of people asked have agreed. For More Information: *User talk:Ram-Man#Multi-Licensing FAQ - Lots of questions answered *Wikipedia:Multi-licensing *User:rambot#Free the Rambot Articles project To allow us to track those users who muli-license their contributions, many users copy and paste the " SodiumArticle changed over to WikiProject Elements format by user:maveric149. Elementbox converted 19:18, 22 Jun 2005 (UTC) by User:Femto. Previous revision was that of [http://en.wikipedia.org/w/index.php?title=Sodium&oldid=15641992 05:04, 22 Jun 2005] === Information Sources === Some of the text in this entry was rewritten from [http://periodic.lanl.gov/elements/11.html Los Alamos National Laboratory - Sodium]. Other information was obtained from the sources listed on the main page but was reformatted and converted into SI units. === Talk === I don't see much reason to keep Temp around; does anyone else? -- User:Lee Daniel Crocker :In this case I would say no -- I worked on it 3 hours straight instead of my usual habit of speading the work over a few days. If it bugs you that it exists then delete it. --User:Maveric149 I just wanted to make sure there wasn't some reason to keep it that I hadn't thought of. If no one objects for a while, I will. ---- Anything on sodium as it relates to nutrition? Actually, there are many things on Sodium that relate to nutrition. One example is your soda drink. Sodium is used in cooking items in: Salt and baking soda. Most nutrional values of Sodium always contain Sodium used as a mixture. Sodium is used in Medicine, the compound that is used in Medicine is nitrous oxide, which it is also widely used as an anesthetic during surgery, in which it is injected into the patient to produce unconsciousness for 1 to 3 minutes, only because nitrous oxide has a property to escape the blood stream fast. ---- In the formula for a hydrate, I don't think a subscript asterisk is the proper symbol between the compound and its water component. Isn't the proper symbol a centered dot, like the · you get with SodiumSodium See other meanings of words starting from letter: SSB | SC | SD | SE | SF | SG | SH | SI | SJ | SK | SL | SM | SN | SO | SP | SR | SS | ST | SU | SW | SX | SY | SZ |Words begining with Sodium: Sodium Sodium Sodium Sodium Sodium Sodium-potassium_ATPase Sodium-potassium_pump Sodium-Vapour_Lamp Sodium/Talk:Sodiumtheperson Sodium/Temp Sodium70mg Sodium_acetate Sodium_alginate Sodium_alginate Sodium_aluminate Sodium_aluminosilicate Sodium_amalgam Sodium_amatol Sodium_amide Sodium_ammonium_phosphate Sodium_ammonium_salt Sodium_amytal Sodium_azide Sodium_Benzoate Sodium_benzoate Sodium_bicarbonate Sodium_bicarbonate Sodium_borate Sodium_boric_acid Sodium_boric_acid Sodium_borohydride Sodium_bromide Sodium_carbonate Sodium_carbonate Sodium_Chlorate Sodium_Chlorate Sodium_chlorate Sodium_chlorate Sodium_Chloride Sodium_chloride Sodium_chloride Sodium_chlorine Sodium_chlorite Sodium_citrate Sodium_cocoate Sodium_cocoato Sodium_compounds Sodium_cromoglycate Sodium_cyanide Sodium_cyanide Sodium_cyclamate Sodium_deficiency Sodium_dodecylsulfate Sodium_dodecyl_sulfate Sodium_dodecyl_sulfate Sodium_dodecyl_sulphate Sodium_ethanoate Sodium_fluoaluminate Sodium_fluoride Sodium_fluoroacetate Sodium_fusion Sodium_fusion_test Sodium_heparin Sodium_hexametaphosphate Sodium_hexametaphosphate Sodium_hydride Sodium_hydrogen_carbonate Sodium_hydrogen_sulphate Sodium_Hydroxide Sodium_hydroxide Sodium_hydroxide Sodium_hypochlorite Sodium_hypochlorite Sodium_hyposulfite Sodium_lamp Sodium_laureth Sodium_laureth Sodium_laureth_sulfate Sodium_laureth_sulfate Sodium_laureth_sulphate Sodium_lauryl_sulfate Sodium_lauryl_sulphate Sodium_light Sodium_metabisulfite Sodium_metabisulphite Sodium_Methylprednisolone Sodium_monofluoroacetate Sodium_Nitrate Sodium_nitrate Sodium_nitrate Sodium_Nitrite Sodium_nitrite Sodium_nitroprusside Sodium_orthophenyl_phenol Sodium_oxide Sodium_pentathol Sodium_Pentothal Sodium_pentothal Sodium_percarbonate Sodium_percarbonate Sodium_perchlorate Sodium_peroxide Sodium_phosphate Sodium_phosphate Sodium_phosphates Sodium_pyrophosphate Sodium_saccharin Sodium_silicate Sodium_silicate Sodium_stearoyl_lactylate Sodium_stearoyl_lactylate Sodium_sulfate Sodium_sulfate Sodium_sulfite Sodium_sulphate Sodium_sulphite Sodium_superoxide Sodium_tallowate Sodium_tetraborate Sodium_tetrahydridoborate Sodium_tetrahydridoborate(III) Sodium_tetrahydridoborate_(III) Sodium_thiopental Sodium_thiosulfate Sodium_thiosulfate Sodium_tri-polyphosphate Sodium_tripolyphosphate Sodium_valproate Sodium_vapor Sodium_vapor_lamp Sodium_vapor_lamp Sodium_vapour_lamp Sodium_vapour_lamp |
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