Assuming you had equal amounts of each, the pure water would freeze first...Adding sugar or salt to water lowers its freezing point, meaning that more energy would be required to be removed from salt...
You could Boil it in a pan? Boil salt water and there should be a line of white on the side of the pan when the water has completely evaporated. You could taste it? The salt water should taste...
The question is a matter of boiling point elevation. Boiling point elevation is a colligative property of water, meaning it depends on only the amount of substance dissolved in the water, not the...
Tap water. Liquids have special things about them, called "colligative properties." That's a fancy word for saying thing about a liquid change, like freezing point and boiling point, depending on...