"How low can we make the freezing point go?" Using salt to lower the freezing point of water -- water molecules form a ring when they freeze

Water freezes at 0 degrees Centigrade or 32 degrees Fahrenheit.

When we add salt to water, the freezing point is lowered.


This video at minute 8 shows how the water molecules make RINGS when ice is formed.
The "solute" (the salt) gets in the way and makes it harder for the ice rings to form.

https://www.youtube.com/watch?v=mWHL4UbFP4w

Go to Minute 3:30 and see how the FREEZING and BOILING points are changed (extending the range when water is a liquid)




Go to minute 5 to 6 and see how water molecules form a ring to take up more space.