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Chapter 3: Q4DQ (page 573)

Why do frozen water pipes burst? Would a mercury thermometer break if the temperature went below the freezing temperature of mercury? Why or why not?

Short Answer

Expert verified

Anomalous expansion of water is responsible for the bursting of pipes.

The glass thermometer with mercury does not burst because the mercury inside it contracts.

Step by step solution

01

Features of water

Water is a curious substance in some respects. Water has a negative coefficient of volume expansion in the temperature interval(00C-40C). In the given temperature range, water show anomalous expansion and compression. Expansion on cooling and contraction on heating.

02

Consequences of negative coefficient

Water expands (increases in volume) when it freezes and the pipes do not. That鈥檚 why they burst. The glass thermometer with mercury does not burst, since the mercury inside contracts.

Hence, water has anomalies.

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