Question

Anamolous expansion of water

Answer 1

Answer:

Explanation:

This anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4°C to 0°C, and it becomes less dense. The density becomes less as it freezes because molecules of water normally form open crystal structures when in solid form.

Answer 2

Answer:-

★ Anomalous expansion of water:-

→ When a given amount of water is heated from 0°C, its volume decreases and density increases until it reaches 4°C. The volume occupied by a given amount of water is lowest and its density is highest at 4°C. When the temperature is increased to 4°C the volume increases its density decreases.

→ Thus, when water is heated from 0°C, it contracts for 0°C to 4°C and it expands above 4°C. This phenomenon is called anomalous expansion of water.

★ Variation of volume of 1 kg of water with temperature:-

→ When the water is cooled below the room temperature the volume of given amount of water decreases. Until it's temperature reaches to 4°C and below 4°C, the volume increases and hence density decreases.So, it is clear said that the water has maximum density and dense the minimum volume at 4°C.