Salt: Salt and Ice

The video explains how adding salt to water lowers its melting and freezing points by disrupting the water's lattice structure. This principle is used to melt ice on roads. Salt is more effective than other substances like sugar due to its availability and cost. However, as temperatures drop below -7°C, salt becomes less effective, and below -10°C, it has little impact.

What happens to the freezing point of water when salt is added?

Describe the lattice structure of pure ice and how it is affected by salt.

Explain how the interaction between salt and water molecules affects ice.

Why is salt considered more effective than sugar or other solvents for lowering the freezing point?

What occurs when temperatures fall below -7°C regarding the effectiveness of salt?