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The vast majority of substances contract upon freezing. The notable exception is water for which the expansion upon freezing has an enormous impact on the nature of the Earth.
Most substances contract and become denser upon freezing, but water expands and becomes less dense below about 4 ºC. It is this expansion that causes pipes and bottles to crack when their contents freeze, and rocks to split open when water freezes in their crevices. Icebergs and blocks of ice float in water because they are less dense than the water from which they were frozen.
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Wiki User
∙ 12y ago
Wiki User
∙ 9y agoDensity increases when a substance contracts as it freezes. The substance will have the same mass but with a smaller volume.
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The temperature at which a substance freezes is also its what?
The answer is that the temperature a substance freezes is also its melting point. Water freezes at 0 degrees Celsius into ice and if you heat ice up to 0 degrees Celsius it MELTS to give you water. Evaporation is the change from liquid to gas and condensation is the change from gas to liquid (for water this happens at 100 degrees Celsius).
Why does water expand by 10 percent when it freezes?
Its very unusual for a substance to expand when it freezes, water is just odd that way. Its just a property of water, its moleucles expand in the area they take up and take up more space.
Does volume change when substance changes states?
Yes. Usually when a substance freezes, or becomes a solid, it will decrease in volume, causing an increase in density. Water is an exception, which is less dense when it freezes/becomes solid.
What happens to the temperature when a substance is melting?
For most substances, it's the same temperature. For example, ice melts at 0°C (273K), and water freezes also at 0°C. A few substances, such as agar, have a hysteresis. For example, agar melts at 85°C; to solidify it again, you have to cool it down to about 32-40°C.
What is the unusual behaviour of water when cooled below 4ºC?
Most matter contracts as it gets colder. Water is one of the few substance that expands (from 4 degrees Centigrade to 0).
When water freezes it contracts?
yes
True or false water contracts when it freezes causing frost wedging?
False, water expands when it freezes.
What is thermal expasion?
Its when a liquid freezes and expands or contracts. Ex. Water when it freezes has more mass than the liquid
What thermal expasion?
Its when a liquid freezes and expands or contracts. Ex. Water when it freezes has more mass than the liquid
What does a solid do when it contracts?
When a solid freezes, it contracts making the molecules inside get closer together which makes the volume smaller.
The temperature at which a substance freezes is lower than the temperature at which it melts?
Correct, the temperature at which a substance freezes is lower than the melting point.
Does a substance gain energy when it freezes?
Lose
What will happen of you put oobleck in the freezer?
It freezes solid but does not expands nor contracts.
When water freezes does it contracts?
No it expands, that's why soda cans sometimes explode if you freeze them.
When a substance freezes does its thermal energy decrease?
yes
When a substance freezes it goes from?
It goes from a liquid to a solid.
Which liquids expand on cooling?
I think that only water expands when it freezes everything else contracts
