Question

Take a glass bottle with tight lid. Fill it with water completely without any gaps and fix the lid tightly and keep it in a refrigerator for few hours and take out. What you have confirmed ? 1) Glass bottle contracts and breaks due to low temperature. 2) Glass bottle expands and breaks due to lowering of temperature. 3) Glass bottle breaks due to increase in volume when water gets converted into ice. 4) Glass bottle breaks due to decrease in volume when water gets converted into ice. ​

Answer 1

It is due to anomalous expansion or strange behavior of water.

The expansion of water takes place as it is cooled from 4 degrees Celsius to zero degree Celsius. This behavior is unusual because most substances contract when they are cooled. But water expand on solidifying. Due to this expansion a glass bottle completely filled with water and tightly closed at room temperature is likely to burst when it is kept in fridge.

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