Properties Of Water - Anomalous Expansion Of Water
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6 سال پیش
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The anomalous expansion of water
The anomalous expansion of water refers to the fact that water, unlike most substances, expands when it freezes. The density of water increases as temperature decreases but reaches a maximum at 4° C then begins to expand. A common trend was seen in substances throughout is the fact that all substances expand when they are heated and their density decreases and vice versa and when you cook something, it contracts and increases in density. This is how substances generally react to heat.
The fact that water expands upon freezing causes icebergs to float. The fact that water reaches a maximum density at about 4°C causes bodies of water to freeze on the top first. Then the further expansion as a part of the phase change keeps the ice floating with some 8% of its mass above the surface.
Why anomalous expansion of water happen?
Anomalous expansion is one of the most interesting properties of water. A water molecule is made of one oxygen atom combined with two hydrogen atoms as shown below. At normal temperature, the water molecules are held together in a liquid state because of the intermolecular attraction of the water molecules. In a liquid state, the water molecules are constantly whizzing around in the container and are constantly being rearranged.
Check out more information about the anomalous expansion of water here-
https://byjus.com/physics/properties-...
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The fact that water expands upon freezing causes icebergs to float. The fact that water reaches a maximum density at about 4°C causes bodies of water to freeze on the top first. Then the further expansion as a part of the phase change keeps the ice floating with some 8% of its mass above the surface.
Why anomalous expansion of water happen?
Anomalous expansion is one of the most interesting properties of water. A water molecule is made of one oxygen atom combined with two hydrogen atoms as shown below. At normal temperature, the water molecules are held together in a liquid state because of the intermolecular attraction of the water molecules. In a liquid state, the water molecules are constantly whizzing around in the container and are constantly being rearranged.
Check out more information about the anomalous expansion of water here-
https://byjus.com/physics/properties-...
Thank you for watching it. If you liked this video, please subscribe to our channel and press the like button. Click on the bell icon to turn on notifications, that way, you will never miss out on our latest videos! Explore more content like this on our channel.
Have an idea or a suggestion for a new video? Please comment below.
6 سال پیش
در تاریخ 1397/07/06 منتشر شده
است.
142,215
بـار بازدید شده