What is antifreeeze?

Answer 1

It doesn't freeze - one use of anti-freeze is in your cars radiator it stops it from freezing up in the winter, no anti freeze and you run the risk of a frozen radiator, car over heating or even worse a cracked engine block.

Answer 2

It is a liquid (of a green color) which has a freezing point which is lower than water because of its alcohol content. It usually can freeze at about -12 degrees Celsius. This is used in the coolant systems in cars to prevent damage when the car is exposed to cold winter temperatures. Water can be used in the radiator, but it will freeze at 0 degrees Celsius causing the pipes to rupture or other forms of damage.