The temperature drops below 0 degrees Celsius but the water doesn't freeze. another way to put it is that the ice doesn't melt as easily.
The salt dissociates into sodium and chlorine ions Na+ Cl-
Adding salt to ice decreases its melting point. Adding salt to the top of ice helps melt the ice faster.
When salt is added to ice, the melting point goes up, causing the ice to melt faster. That's why is cities where ice frequently is one sidewalks in winter, people shovel salt onto the sidewalk.
Adding salt to ice water lowers the freezing point of the water. This is because the salt disrupts the formation of ice crystals, making it harder for the water to freeze.
Salt water will melt an ice cube faster than flour water. This is because salt lowers the freezing point of water, causing the ice to melt more quickly. Flour water does not lower the freezing point significantly, so it will melt ice at a slower rate.
"The ice cube without salt melts because the air around it is warmer than 32 degrees F. The salted cube melts faster. When you add salt it dissolves into the water of the ice cube. Salt water freezes at a lower temperature than the 32 degrees F at which freshwater freezes. The difference between the air temperature and the freezing point of salt water is bigger than the difference between the air temperature and the freezing point of freshwater. This makes the ice with salt on it melt faster." ("Salt and Ice." Salt and Ice. N.p., n.d. Web. 23 Nov. 2015.)
The freezing point of water decrease because the dissolution is a process which release heat.
The freezing point of water decrease because the dissolution is a process which release heat.
You don't ADD salt
I assume you are asking why salt melts ice. It's very difficult to tell from your question... What happens, is that ice always has a thin layer of liquid water on it. When salt disolves in water it produces heat, melting the ice, providing more liquid water to disolve the salt into.
Adding salt to ice decreases its melting point. Adding salt to the top of ice helps melt the ice faster.
The ice will melt, as long as the temperature around it is over negative six degrees Fahrenheit. The salt combines with the snow, which is H2O, and creates salt water. Because the freezing point of salt water is negative six degrees, the salt shall melt if not in -6 degree weather.
Salt release slowly the heat of dissolution and the temperature is increased.
nothing, it's only effective when salt is sprinkled ON the ice.
You add it to the ice used for cooling the mixture. It makes it colder. You don't want salt in what you eat!
It melts slowly.
Salt affects how fast ice melts in a cup of water. When you add salt, the melting process will be faster but it will only affect the part of the ice cube that comes into contact with salt.
Salt decreases the freezing point of water, causing the ice to melt. This happens because the salt lowers the temperature at which the ice can exist in a solid state, leading to the ice absorbing heat from its surroundings and melting.