Can ice cubes be made from salt water?
Most natural ice is made of fresh water, because freezing water locks its molecules into a crystal structure that leaves no room for the dissolved salt. Even ocean ice becomes "fresh" water as it freezes, since the freezing water both excludes the salt from its structure, and since the freezing temperature for salt water is much lower than for fresh water. Fresh water freezes at around 0 degrees...
(The entire section contains 202 words.)
check Approved by eNotes Editorial