Because rock salt particles are larger and contain impurities, though, the rock salt particles don't lower the freezing point as much as table salt. Substances That Dissolve in Water The water molecule is polar. read more
Seeing which type of salt melts ice the fastest is relevant to real-life situations because it is what a lot of people use to melt the ice outside in the winter and also people use salt to cook to make water heat faster. read more
Most people prefer rock salt to melt ice (sidewalks, driveways, etc) over table salt because it does not cake on the surface like table salt. read more