Learn more physics! What is distilled water? - Samantha (age 9)
Distilled water is water that has been boiled and then
recondensed (that is, the water vapor is turned back into liquid
water on a cold People distill water in order to purify it.
Dissolved contaminants like salts are left behind in the boiling
pot as the water vapor rises away. It might not work if the
contaminants also boil and recondense, such as having some
dissolved alcohol. Plus, you have to be careful not to re-
contaminate the water after distilling it. (published on
10/22/2007) Follow-up on this answer.