Why ice floats on water ? Explain the property by which it floats.
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Ice is less dense compared to water at the same temperature. So it floats on top of water on the surface. Reason is the Hydrogen bonds and Anomalous expansion of water while freezing.
When water cools from say, 10°C towards 4°C, water contracts. Water (H2 O) molecules come closer. Water crystal structure starts forming. It means Freezing starts. Density increases. This is usual in any liquid. At 4°C the Hydrogen bonds in water start to dominate. Hydrogen in one molecule is attracted to Oxygen in the neighbouring molecule. The crystal structure changes.
This Hydrogen bonding results in an arrangement where molecules are further away from each other. That means 9% more space is required. So volume increases when water cools (freezes) from 4°C to 0°C. So density of Ice is lower because its volume is more.
This phenomenon is called Anomalous expansion of water.
When water cools from say, 10°C towards 4°C, water contracts. Water (H2 O) molecules come closer. Water crystal structure starts forming. It means Freezing starts. Density increases. This is usual in any liquid. At 4°C the Hydrogen bonds in water start to dominate. Hydrogen in one molecule is attracted to Oxygen in the neighbouring molecule. The crystal structure changes.
This Hydrogen bonding results in an arrangement where molecules are further away from each other. That means 9% more space is required. So volume increases when water cools (freezes) from 4°C to 0°C. So density of Ice is lower because its volume is more.
This phenomenon is called Anomalous expansion of water.
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Answer:
Ice floats on water because density of ice is less than water.As it cools further and freezes into ice,it actually becomes less dense than water.
Explanation:
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