News Ice and salt challenge

# Ice and salt challenge

-

## Introduction

You may or may not have witnessed this on certain social media platforms, like Facebook or YouTube. Basically, this challenge requires 3 things: ice, salt and skin. The contestant pours some salt on the skin(most preferably the palm), puts the ice on top of the salt and then adds pressure, making sure little water is lost. The challenge is to withstand this for as long as possible

### What really happens there?

To understand what happens in that, we need to talk just a little bit about water and watery solutions.

Water has a freezing point of 0 degrees centigrade, or 32 degrees Fahrenheit. From that moment on, water will solidify, turning into ice. The cooler the temperature, the faster the process.

Well, that happens when water is ‘pure’, that is, without any contaminants. When you add plain old table salt, things change. Salty water has a lower freezing point. That means that it will freeze below 0 degrees C (32 degrees F) .

But in order to obtain a watery solution of salt, salt must firstly dissolve in water. And this process requires energy in the form of heat. This is called an endergonic process. Typically, it could get it from the surrounding air. But, conveniently enough, someone left their palm there. So it will absorb the heat from there.

### What does it lead to?

The net effect is that heat is being transferred from the skin to the solution. From the skin’s point of view, this is a net loss. Greater that it could replenish. So, believe it or not, this will lead to early-stage frostbite. And although many of the participants experience what may feel like a burning sensation, this actually comes from an inability of the brain to discern between very hot stimuli and very cold stimuli.

Conclusion

Although it may seem fun to see someone ‘scorch’ their hand, this experiment should not be performed unless it has to prove a purpose. And the purpose is the demonstration of basic physics, not fun.

#### References

1. ##### Salt ice challenge

.http://en.wikipedia.org/wiki/Salt_and_ice_challenge

2. ##### Confusing hot and cold

http://mentalfloss.com/article/19448/why-does-hot-water-sometimes-feel-cold

General Contributor
Janice is a writer from Chicago, IL. She created the "simple living as told by me" newsletter with more than 12,000 subscribers about Living Better and is a founder of Seekyt.

### Japanese Owl Meaning and Symbolism

If you're wondering about the Japanese owl meaning and symbolism in Asian cultures, the Owl, along with Maneki Neko...

### What Are the Signs of Depression in Women

Gender and depression have long been the scope of research in the field of emotional disorders; most authors believe...

### Top 7 Superfoods for Men to Stay Young

Superfoods are generally regarded as targeted foods that provide the maximum nutritional benefit - thus these foods are nutritionally-dense...

### Best Brain foods for Kids – Boost Brain Power and Keep Sharp

A child's brain is developing rapidly and if you want them to improve their performance in school and their...

### 7 of the Best Brain Foods for Studying

The foods that you eat can improve the functioning of your brain. Just like drugs, foods have amino acids,...

### B12 Shots for Dogs – 10 Key Benefits

The end of 2010, my little dog -- a 7-pound Papillon -- became very stressed after a flood in...