How Does Salt Keep Roads From Freezing ?

Interesting Engineering

How is it that salt, at the same temperature as its surroundings, is able to de-ice winter roads?

When coming into contact with water, salt splits into sodium and chloride disrupting the organized crystal structures that form ice. Therefore, salt lowers the freezing point of water. This is called freezing point depression. But salt has some drawbacks. See the video for the full story.