Question

What is the anomalous expansion of water?

Answer 1

Anomalous expansion of water

• Water shows an anomalous behaviour, during freezing.
• Water has a maximum density at $4°\mathrm{C}$.
• When the temperature changes from $4°\mathrm{C}$ to $0°\mathrm{C}$, the expansion of water happens (instead of contracting) and hence, water becomes less dense.