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Because the same amount of matter now occupies a larger space, therefore decreasing its density.

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Q: Why does the water become less dense when it expands?
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When water freezes it expands and becomes more or less dense?

It becomes less dense. Ice will float on water


Why is hot water less dense that cold water?

As water eats up, it expands. There is still the same amount of water, but now in a larger space so it is less dense than cold water.


Is cold water less dense that hot water?

As water eats up, it expands. There is still the same amount of water, but now in a larger space so it is less dense than cold water.


Which is denser ice or cold water?

Cold Water. Water expands when it freezes, which makes ice less dense.


Why does water become less dense as it expands?

Water becomes dense when it is more saturated than absorbing a solution. For example, salt with make water more dense because as more salt is added, it becomes saturated.


What is less dense than water at 4 degrees Celsius?

Ice. It expands when it's 0 degrees Celsius.


Does polar water diluted by meltings ice become more or less dense?

less denser than


What difficulties would arise if you defined terms of the density of water?

Yes, the density of water is dependent on its temperature, but the relation is not linear. When cooled from room temperature liquid water becomes increasingly dense, just like other substances. But at approximately 4 °C, water reaches its maximum density. As it is cooled further under ambient conditions, it expands to become less dense.


Why does ice float into water?

When you freeze water it expands so it is less dense than liquid water therefore more buoyant so it floats.


Where cool dense water sinks does it become more dense?

In the Mediterranean Sea the cool dense water sinks under less dense water which is called density current.


Where cool dense water sinks it become more dense?

In the Mediterranean Sea the cool dense water sinks under less dense water which is called density current.


Is water denser when it's frozen than when liquid?

No. I*f it were, ice would sink in a glass of water. As water freezes, it expands, and becomes less dense.