Question

Why should a glass bottle completely filled with water never be kept in a freezer?

Answer 1

Hint: The freezer decreases the temperature of the substance kept inside it. Glass water bottle is a fixed container; it cannot increase its volume . If pressure is applied in a glass bottle it may result in breaking.

Complete step by step solution:
We know that a freezer is used to keep edible items in a lower temperature. A freezer lowers down the temperature due to which substance can get cold. So, whenever a glass bottle completely filled with water is kept in a freezer the water inside the bottle becomes cool and after attaining a certain temperature it starts expanding. When it is expanded sufficiently the water bottle may burst. When the after inside the glass bottle expands it cannot escape out of the bottle which results in bursting of the water bottle. When the water inside the bottle expands in lower temperature it exerts pressure in the inner walls of the bottle due to which the bottles burst. Sometimes it can lead to accidents so it is very dangerous. So from the above explanation it is clear to us that we should never fill a glass bottle completely and keep it in a freezer. The water can be filled up to a level little less than the full so that if the water expands it does not cause any problem.

Note:
Always remember that when a glass bottle with water is kept in a freezer, the water inside the bottle expands due to lowering of the temperature. The molecules of the water exert pressure in the inner walls of the water bottle which can lead to sudden bursting of the water bottle.