Question

What conclusion could you draw from the graph? How is anamalous behaviour of water proved

Answer 1

Generally, the volume of substances increases on heating and decreases in cooling. But when water is heated from 0 degree Celsius to 4 degree Celsius, its volume decreases and increases only after 4 degree Celsius. This unusual behavior of water from 0 degree Celsius to 4 degree Celsius is known as anomalous expansion of water.

As density is inversely proportional to volume, so, density of water increases from 0 degree Celsius to 4 degree Celsius.

At 4 degree Celsius, water has minimum volume and maximum density.