What happened if water bottle is opened on moon?

Answer 1

The water would immediately begin to boil off (because there is no air pressure on the moon). This would cause the water in the bottle to cool and it would freeze the remaining water solid. This ice would continue to sublimate.

Answer 2

If a water bottle is opened on the moon, the water inside would rapidly vaporize and dissipate into the vacuum of space due to the low atmospheric pressure. The lack of atmosphere on the moon means there is no air pressure to keep the liquid water from turning into gas.

Answer 3

The oxygen would dissipate very quickly.