What will happen to

a well stoppered bottle filled with water left in the freezer overnight?

4 answers

What does water do when it freezes?
It changes into ice and increases in volume?
yes, at 4C, water is at its maximum density (least volume), below that and above that it is expanding.
The water would change to ice. This is because bond breaking energy is higher than bond making energy hence more heat would escape from the water. Therefore temperature would drop and water would change to ice and consequently increase in volume.