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If you have a Wikipedia account, please log in. </p><p>If you do not have any other way to edit Wikipedia, you will need to <a href="/wiki/Wikipedia:IP_block_exemption#Requesting_and_granting_exemption" title="Wikipedia:IP block exemption">request an IP block exemption</a>. </p> <style data-mw-deduplicate="TemplateStyles:r1214851843">.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important}}</style><div class="hidden-begin mw-collapsible mw-collapsed" style=""><div class="hidden-title skin-nightmode-reset-color" style="text-align:center;">How to appeal if you are confident that your connection does not use a colocation provider's IP address:</div><div class="hidden-content mw-collapsible-content" style=""> If you are confident that you are not using a web host, you may <a href="/wiki/Wikipedia:Appealing_a_block" title="Wikipedia:Appealing a block">appeal this block</a> by adding the following text on your <a href="/wiki/Help:Talk_pages" title="Help:Talk pages">talk page</a>: <code>{{<a href="/wiki/Template:Unblock" title="Template:Unblock">unblock</a>|reason=Caught by a colocation web host block but this host or IP is not a web host. My IP address is _______. <i>Place any further information here.</i> ~~~~}}</code>. <b>You must fill in the blank with your IP address for this block to be investigated.</b> Your IP address can be determined <span class="plainlinks"><b><a class="external text" href="https://en.wikipedia.org/wiki/Wikipedia:Get_my_IP_address?withJS=MediaWiki:Get-my-ip.js">here</a></b></span>. Alternatively, if you wish to keep your IP address private you can use the <a href="/wiki/Wikipedia:Unblock_Ticket_Request_System" title="Wikipedia:Unblock Ticket Request System">unblock ticket request system</a>. 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Your current IP address is 8.222.208.146. </p> <div class="paragraphbreak" style="margin-top:0.5em"></div><div style="font-size: 16px;"> <p>Even when blocked, you will <i>usually</i> still be able to edit your <a href="/wiki/Special:MyTalk" title="Special:MyTalk">user talk page</a>, as well as <a href="/wiki/Wikipedia:Emailing_users" title="Wikipedia:Emailing users">email</a> administrators and other editors. </p> </div> <div class="paragraphbreak" style="margin-top:0.5em"></div><div style="font-size: 16px;"> <p>For information on how to proceed, please read the <b><a href="/wiki/Wikipedia:Appealing_a_block#Common_questions" title="Wikipedia:Appealing a block">FAQ for blocked users</a></b> and the <a href="/wiki/Wikipedia:Appealing_a_block" title="Wikipedia:Appealing a block">guideline on block appeals</a>. The <a href="/wiki/Wikipedia:Guide_to_appealing_blocks" title="Wikipedia:Guide to appealing blocks">guide to appealing blocks</a> may also be helpful. </p> </div> <p>Other useful links: <a href="/wiki/Wikipedia:Blocking_policy" title="Wikipedia:Blocking policy">Blocking policy</a> · <a href="/wiki/Help:I_have_been_blocked" title="Help:I have been blocked">Help:I have been blocked</a> </p> </div></li><li class="mw-permissionerror-globalblocking-blockedtext-range"> <div id="mw-blocked-text" style="border: 1px solid #AAA; background-color: var(--background-color-warning-subtle, ivory); color: inherit; padding: 1.5em; width: 100%; box-sizing: border-box;"> <div style="text-align: center;"><span style="font-size: 26px;"><span typeof="mw:File"><a href="/wiki/File:Stop_hand_nuvola.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/f/f1/Stop_hand_nuvola.svg/50px-Stop_hand_nuvola.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f1/Stop_hand_nuvola.svg/75px-Stop_hand_nuvola.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f1/Stop_hand_nuvola.svg/100px-Stop_hand_nuvola.svg.png 2x" data-file-width="240" data-file-height="240" /></a></span><b> This IP address range has been <a href="https://meta.wikimedia.org/wiki/Global_blocks" class="extiw" title="m:Global blocks">globally blocked</a>.</b></span><br /><span style="font-size: 18px;">This does not affect your ability to <i>read</i> Wikipedia pages.</span></div><div class="paragraphbreak" style="margin-top:0.5em"></div><b>Most people who see this message have done nothing wrong.</b> Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.<div class="paragraphbreak" style="margin-top:0.5em"></div><div class="paragraphbreak" style="margin-top:0.5em"></div> <p>This block affects editing on all Wikimedia wikis. </p><p>The IP address or range 8.222.128.0/17 has been globally <a href="/wiki/Wikipedia:Blocking_policy" title="Wikipedia:Blocking policy">blocked</a> by <a href="/wiki/User:Jon_Kolbert" title="User:Jon Kolbert">‪Jon Kolbert‬</a> for the following reason(s): </p> <div style="padding:10px; background:var(--background-color-base, white); color:inherit; border:1px #666 solid;"> <p><a href="https://meta.wikimedia.org/wiki/Special:MyLanguage/NOP" class="extiw" title="m:Special:MyLanguage/NOP">Open proxy/Webhost</a>: See the <a href="https://meta.wikimedia.org/wiki/WM:OP/H" class="extiw" title="m:WM:OP/H">help page</a> if you are affected </p> </div> <p>This block will expire on 15:12, 27 August 2028. Your current IP address is 8.222.208.146. </p> <div class="paragraphbreak" style="margin-top:0.5em"></div><div style="font-size: 16px;"> <p>Even while globally blocked, you will <i>usually</i> still be able to edit pages on <a href="https://meta.wikimedia.org/wiki/" class="extiw" title="m:">Meta-Wiki</a>. </p> </div> <div class="paragraphbreak" style="margin-top:0.5em"></div><div style="font-size: 16px;"> <p>If you believe you were blocked by mistake, you can find additional information and instructions in the <a href="https://meta.wikimedia.org/wiki/Special:MyLanguage/No_open_proxies" class="extiw" title="m:Special:MyLanguage/No open proxies">No open proxies</a> global policy. Otherwise, to discuss the block please <a href="https://meta.wikimedia.org/wiki/Steward_requests/Global" class="extiw" title="m:Steward requests/Global">post a request for review on Meta-Wiki</a>. You could also send an email to the <a href="https://meta.wikimedia.org/wiki/Special:MyLanguage/Stewards" class="extiw" title="m:Special:MyLanguage/Stewards">stewards</a> <a href="https://meta.wikimedia.org/wiki/Special:MyLanguage/VRT" class="extiw" title="m:Special:MyLanguage/VRT">VRT</a> queue at <kbd>stewards@wikimedia.org</kbd> including all above details. </p> </div> <p>Other useful links: <a href="https://meta.wikimedia.org/wiki/Global_blocks" class="extiw" title="m:Global blocks">Global blocks</a> · <a href="/wiki/Help:I_have_been_blocked" title="Help:I have been blocked">Help:I have been blocked</a> </p> </div></li></ul><hr /> <div id="viewsourcetext">You can view and copy the source of this page:</div><textarea readonly="" accesskey="," id="wpTextbox1" cols="80" rows="25" style="" class="mw-editfont-monospace" lang="en" dir="ltr" name="wpTextbox1">{{Navbox | name = Branches of chemistry | title = Branches of [[chemistry]] | state = {{{state|autocollapse}}} | bodyclass = hlist | above = * [[Glossary of chemical formulae]] * [[List of biomolecules]] * [[List of inorganic compounds]] * [[Periodic table]] | group1 = [[Analytical chemistry|Analytical]] | list1 =  * [[Instrumental chemistry]] * [[Electroanalytical methods]] * [[Spectroscopy]] ** [[Infrared spectroscopy|IR]] ** [[Raman spectroscopy|Raman]] ** [[Ultraviolet–visible spectroscopy|UV-Vis]] ** [[Nuclear magnetic resonance spectroscopy|NMR]] * [[Mass spectrometry]] ** [[Electron ionization|EI]] ** [[Inductively coupled plasma mass spectrometry|ICP]] ** [[Matrix-assisted laser desorption/ionization|MALDI]] * [[Separation process]] * [[Chromatography]] ** [[Gas chromatography|GC]] ** [[High-performance liquid chromatography|HPLC]] * [[Crystallography]] * [[Characterization (materials science)|Characterization]] * [[Titration]] * [[Wet chemistry]] * [[Calorimetry]] * [[Elemental analysis]] | group2 = [[Theoretical chemistry|Theoretical]] | list2 =  * [[Quantum chemistry]] * [[Computational chemistry]] ** [[Mathematical chemistry]] * [[Molecular modelling]] * [[Molecular mechanics]] * [[Molecular dynamics]] * [[Molecular geometry]] ** [[VSEPR theory]] | group3 = [[Physical chemistry|Physical]] | list3 =  * [[Electrochemistry]] ** [[Spectroelectrochemistry]] ** [[Photoelectrochemistry]] * [[Thermochemistry]] * [[Chemical thermodynamics]] * [[Surface science]] * [[Interface and colloid science]] ** [[Micromeritics]] * [[Cryochemistry]] * [[Sonochemistry]] * [[Structural chemistry]] * [[Chemical physics]] ** [[Molecular physics]] * [[Femtochemistry]] * [[Chemical kinetics]] * [[Spectroscopy]] * [[Photochemistry]] * [[Spin chemistry]] * [[Microwave chemistry]] * [[Equilibrium chemistry]] * [[Mechanochemistry]] | group4 = [[Inorganic chemistry|Inorganic]] | list4 =  * [[Coordination complex|Coordination chemistry]] * [[Magnetochemistry]] * [[Organometallic chemistry]] ** [[Organolanthanide chemistry]] * [[Atom cluster|Cluster chemistry]] * [[Solid-state chemistry]] * [[Ceramic chemistry]] | group5 = [[Organic chemistry|Organic]] | list5 =  * [[Stereochemistry]] ** [[Alkane stereochemistry]] * [[Physical organic chemistry]] * [[Organic reactions]] * [[Organic synthesis]] * [[Retrosynthetic analysis]] * [[Enantioselective synthesis]] * [[Total synthesis]] / [[Semisynthesis]] * [[Fullerene chemistry]] * [[Polymer chemistry]] * [[Petrochemistry]] * [[Dynamic covalent chemistry]] | group6 = [[Biochemistry|Biological]] | list6 =  * [[Biochemistry]] ** [[Molecular biology]] ** [[Cell biology]] * [[Chemical biology]] ** [[Bioorthogonal chemistry]] * [[Medicinal chemistry]] ** [[Pharmacology]] * [[Clinical chemistry]] * [[Neurochemistry]] * [[Bioorganic chemistry]] * [[Bioorganometallic chemistry]] * [[Bioinorganic chemistry]] * [[Biophysical chemistry]] | group7 = [[Interdisciplinarity|Interdisciplinarity]] | list7 =  * [[Nuclear chemistry]] ** [[Radiochemistry]] ** [[Radiation chemistry]] ** [[Actinide chemistry]] * [[Cosmochemistry]] / [[Astrochemistry]] / [[Stellar chemistry]] * [[Geochemistry]] ** [[Biogeochemistry]] ** [[Photogeochemistry]] * [[Environmental chemistry]] ** [[Atmospheric chemistry]] ** [[Ocean chemistry]] * [[Clay chemistry]] * [[Carbochemistry]] * [[Food chemistry]] ** [[Carbohydrate chemistry]] ** [[Food physical chemistry]] * [[Agricultural chemistry]] ** [[Soil chemistry]] * [[Chemistry education]] ** [[Amateur chemistry]] ** [[General chemistry]] * [[Clandestine chemistry]] * [[Forensic chemistry]] ** [[Forensic toxicology]] ** [[Post-mortem chemistry]] * [[Nanochemistry]] ** [[Supramolecular chemistry]] * [[Chemical synthesis]] ** [[Green chemistry]] ** [[Click chemistry]] ** [[Combinatorial chemistry]] ** [[Biosynthesis]] * [[Chemical engineering]] ** [[Stoichiometry]] * [[Materials science]] ** [[Metallurgy]] ** [[Ceramic engineering]] ** [[Polymer science]] | group8 = See also | list8 = * [[History of chemistry]] * [[Nobel Prize in Chemistry]] * [[Timeline of chemistry]] ** [[Discovery of chemical elements|of element discoveries]] * "[[The central science]]" * [[Chemical reaction]] ** [[Catalysis]] * [[Chemical element]] * [[Chemical compound]] * [[Atom]] * [[Molecule]] * [[Ion]] * [[Chemical substance]] * [[Chemical bond]] * [[Alchemy]] * [[Quantum mechanics]] | below = * {{icon|category}} '''[[:Category:Chemistry|Category]]''' * {{icon|commons}} '''[[commons:Category:Chemistry|Commons]]''' * {{icon|portal}} '''[[Portal:Chemistry|Portal]]''' * {{Icon|WikiProject}} '''[[Wikipedia:WikiProject Chemistry|WikiProject]]''' }}<noinclude> {{collapsible option}} [[Category:Chemistry navigational boxes]] </noinclude> </textarea><div class="templatesUsed"><div class="mw-templatesUsedExplanation"><p><span id="templatesused">Pages transcluded onto the current version of this page<span class="posteditwindowhelplinks"> (<a href="/wiki/Help:Transclusion" title="Help:Transclusion">help</a>)</span>:</span> </p></div><ul> <li><a href="/wiki/Template:Collapsible_option" title="Template:Collapsible option">Template:Collapsible 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