FREEZING-POINT DEPRESSION

WHAT IS A FREEZING-POINT DEPRESSION?

• Adding a solute to a solvent decreases the freezing point of the solvent
• A common example is when adding salt into water

WHAT'S THE EQUATION

USES

• Adding ethylene glycol to water lowers the freezing-point to a radiator
• Adding salt to an icy road also lowers the road's freezing-point

WHAT SALTS ARE ECO-FRIENDLY?

• Although salts are great for melting ice on roads they harm the environment
• In all honesty, try not to use salts but do try sand, coffee grounds, organic, salt-free De-Icer, or urea.
• If using salts is a must then pick them carefully

USES IN PEOPLE'S LIVES

• Making ice cream
• Melting ice on roads
• Radiators