Chemistry
Understanding Colligative Properties: Boiling Point Elevation and Freezing Point Depression
Quick fact
Adding about one mole of a nonvolatile solute (like sugar) to a kilogram of water raises its boiling point by only about 0.51°C, but lowers its freezing point by about 1.86°C — the same number of particles produces nearly four times greater effect on freezing than on boiling.
Why this is interesting
Have you ever wondered why we sprinkle salt on icy roads in winter? Or why adding salt to water makes it boil faster? The answers lie in two fascinating changes: boiling point elevation and freezing point depression.