Originally Posted by ICER

OK, get ready to groan, because once again I tried this experiment at home.

Experiments items
3 bottles of .1L (1PT, 0.9FL oz) Ozarka water
1st Opened with 1/2 cup poured out. Lid screwed back on
2nd Opened with no water poured out. Again the lid screwed on
3rd Unopened

Placed in freezer at exactly 2:00 am
Removed from freezer at exactly 10:00 am

Results. All the water in all three bottles were frozen solid.

Well. From this I would say that it doesn't matter if the container is open or closed. Or how much water is in it. Placed in a freezer for 8 hours. It all freezes

Granted my freezer was colder in the subject's car. So maybe it takes longer for the unopened bottle to freeze. I'll run another experiment tonight to see how long it takes them to freeze