If you do the salt an ice challenge, when you put ice on your hand then mix it with the salt. What causes your hand to

Question: If you do the salt an ice challenge, when you put ice on your hand then mix it with the salt. What causes your hand to turn red and start burning?
- Keywords:
  challenge,
  ice,
  salt
Asked by anon-22966 to Amy, Karen, Sarah, Will on 20 Jun 2012.
- Sarah Martin answered on 20 Jun 2012:
  
  Hi cassie,
  
  It’s the cold! Because salt melts the ice at a much much lower temperature than it would usually melt at, so you are holding a liquid at -10 or even -15 degrees in your hand and it’s sucking all the heat out of it! I guess it’s a bit like how your hand would feel after a good snow ball fight without gloves on.
  
  Watch out for frostbite!:) Sarah

anon-22966 commented on 20 Jun 2012:

Oh, okay thanks Sarah,,<3

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Question: If you do the salt an ice challenge, when you put ice on your hand then mix it with the salt. What causes your hand to turn red and start burning?