Content deleted Content added
m Reverted 1 edit by 176.76.227.244 (talk) to last revision by WikiCleanerBot |
typo |
||
| (6 intermediate revisions by 6 users not shown) | |||
Line 2:
[[File:Salt and ice challenge hand day 11.jpg|thumb|Scarring as a result of the salt and ice challenge, eleven days after performing it]]
The '''salt and ice challenge''' is an Internet challenge in which participants pour [[salt]] on their bodies, usually on the arm, and ice is then placed on the salt.<ref>{{cite news |last1=Vang |first1=Gia |date=29 July 2012|url= http://fox4kc.com/2012/07/29/experts-dont-try-salt-and-ice-challenge/ |title= Experts: Don't Try 'Salt and Ice Challenge' |website=[[FOX4KC]] |access-date=28 June 2013 |archive-date=31 July 2012 |archive-url= https://web.archive.org/web/20120731061055/http://fox4kc.com/2012/07/29/experts-dont-try-salt-and-ice-challenge/ |url-status=live}}</ref> This causes a "burning" sensation similar to [[frostbite]], and participants
The ice and salt create an [[eutectic]] [[frigorific mixture]] which can get as cold as {{convert|-18|C}}.<ref>{{cite web |last1=Senese |first1=Fred |date=23 February 2018 |url=http://antoine.frostburg.edu/chem/senese/101/solutions/faq/zero-fahrenheit.shtml |title=General Chemistry Online: FAQ: Solutions: Why isn't 0°F the lowest possible temperature for a salt/ice/water mixture? |website=General Chemistry Online |access-date=15 March 2016 |archive-date=27 September 2011 |archive-url=https://web.archive.org/web/20110927152340/http://antoine.frostburg.edu/chem/senese/101/solutions/faq/zero-fahrenheit.shtml |url-status=live}}</ref>
Line 10:
== Scientific explanation ==
The salt and ice form an eutectic frigorific mixture. [[Chemical polarity|Molecular polarity]] is key to this reaction. The ions in [[sodium chloride]] (table salt) are heavily influenced by the molecular polarizability of the ice.<ref>{{Cite journal |last1=Kim |first1=Jun Soo |last2=Yethiraj |first2=Arun |year=2008 |title=The effect of salt on the melting of ice: A molecular dynamics simulation study |journal=The Journal of Chemical Physics |doi=10.1063/1.2979247 |volume=129 |issue=12|pmid=19045033 |bibcode=2008JChPh.129l4504K }}</ref> The difference between the spacing of the electrons in the table salt and ice causes this reaction. The [[melting point]] of ice is decreased due to the incorporation of table salt and this then causes a binding of the two substances. The ice is neutralized by the salt, thus causing the ice to melt more easily and quickly.<ref>{{cite journal |last1=Breakey |first1=William |last2=Crowley |first2=Timothy P. |last3=Alrawi |first3=Mogdad |year=2015 |title=Salt and Ice, a Challenge Not to Be Taken Lightly
== Health hazards and injury recovery ==
The stunt leaves behind an [[Frostbite|ice burn]] that increases in severity the longer the chemical reaction on the skin continues. In this ice burn, the [[ice crystal]]s that form have the potential to burn and scar the skin permanently. [[Blister|Blistering]] at the site of injury is common in more severe cases.<ref>{{cite journal |last1=Sachs |first1=Christoph |last2=Lehnhardt |first2=Marcus |last3=Daigeler |first3=Adrian |last4=Goertz |first4=Ole |year=2015 |title=The Triaging and Treatment of Cold-Induced Injuries |journal=Deutsches Ärzteblatt International |volume=112 |issue=44 |pages=741–747 |doi=10.3238/arztebl.2015.0741 |pmid=26575137|pmc=4650908 }}</ref> The freezing of tissue between the [[Dermis|dermal]] and [[Epidermis|epidermal]] levels of the skin leads to a disruption in blood circulation, initially causing frost nip.<ref>{{Cite journal |last1=Long III |first1=William B. |last2=Edlich |first2=Richard |last3=Winters |first3=Kathryne L. |last4=Britt |first4=L. D. |year=2005 |title=Cold Injuries |url=https://www.dl.begellhouse.com/journals/1bef42082d7a0fdf,2ed3f1eb04c82575,08a591dc670a33fb.html |journal=Journal of Long-Term Effects of Medical Implants |language=English |volume=15 |issue=1 |pages=
== In popular culture ==
| |||