Question

At what temperature the density of water is maximum? State its value.

Answer 1

The density of water is maximum at $4°C$ and its value is 1000 kg/m³.

1. At a temperature near $0°$, the water still contains ice-like clusters. These clusters still have empty spaces which decrease the density of the liquid.

2. As the temperature of warm water decreases, the water molecules slow down, and density increases.

3. At $4°$, the clusters start forming. The molecules are still forming slowing down and coming closer, but the formation of clusters makes the molecules further apart after $4°$.