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Anamolous expansion of water |
Answer» 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. |
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