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Why is water the only substance that expands when frozen?
Nope. Silicon(Si), Gallium(Ga), Antimony(Sb), Bismuth(Bi) and acetic acid(CH3COOH, vinegar) all expand on freezing as well. Moreover, silicon expands more than water on freezing (10% compared to waters 8%). The trick to this is that any substance with an open tetrahedral molecular structure will also expand upon freezing. (Perhaps phosphorus oxide(s))
If a substance contracts when it freezes?
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. See related links below for more information.
If water was nonpolar?
water would not be able to form hydrogen bonds (wrong)Apex - Water would not rise inside plants :P
Are boiling points of all liquids the same?
All liquids have different boiling point (BP). It's one of the must important characteristics of liquids. You can distinguish and also separate a mixture of liquids by boiling off one with a lower BP. The BP of every liquid depends upon the attractive forces among the atoms or molecules of the material such as hydrogen bonds, dipole attraction, London forces, etc....
What is the difference between the gaseous and liquid state of the same substance?
Liquids and gases both have the property of having no fixed shape, and change their shape depending upon their surrpoundings. Gases, unlike liquids, also have no fixed volume, and readily expand or contract.
What does liquids become when they freeze?
Liquids become solids when they freeze. Freezing is the process of a liquid turning into a solid when its temperature drops below its freezing point.
Does properly air-entrained cement paste shrink or expand upon freezing?
It will shrink!
Why is water the only substance that expands when frozen?
Nope. Silicon(Si), Gallium(Ga), Antimony(Sb), Bismuth(Bi) and acetic acid(CH3COOH, vinegar) all expand on freezing as well. Moreover, silicon expands more than water on freezing (10% compared to waters 8%). The trick to this is that any substance with an open tetrahedral molecular structure will also expand upon freezing. (Perhaps phosphorus oxide(s))
Why do gallium silicon and bismuth expand on freezing?
Gallium, silicon, and bismuth exhibit unusual expansion on freezing due to the way their crystal structures change upon freezing. The crystals of these elements have an open or less dense structure in the solid phase compared to the liquid phase, leading to expansion upon freezing instead of contraction.
How does CV Raman illustrate the life giving and life sustaining properties of water?
He illustrates that waters cohesive behaviour. It has the ability to moderate temperatures. Its ability to expand upon freezing. Its versatility as a solvent.
What are the life sustaining properties of water?
1) It's cohesive behavior 2) It's ability to moderate temperature 3) It's ability to expand upon freezing 4) It's versatility as a solvent
Do the different liquid have different boiling points?
Yes, different liquids have different boiling points. The boiling point of a liquid is the temperature at which its vapor pressure is equal to the pressure exerted on it. This means that liquids with stronger intermolecular forces tend to have higher boiling points.
What is important life-sustaining property of water?
1) It's cohesive behavior 2) It's ability to moderate temperature 3) It's ability to expand upon freezing 4) It's versatility as a solvent
Do liquids have higher density than solids?
Yes, water is one of the exceptions to the rule that a solid shrinks when it solidifies. Water expands. If you freeze water in glass eg beer bottles, the bottle will shatter as the liquid freezes. Water pipes can burst, metal water bottles will split if frozen full of water. The water takes in air as it freezes, thus ice floats in your glass rather than sinking.
What is important life-sustaining properties of water?
1) It's cohesive behavior 2) It's ability to moderate temperature 3) It's ability to expand upon freezing 4) It's versatility as a solvent
What substances will expand upon freezing?
Water expands when it freezes because, due to the hydrogen bonding, it forms a tetrahedral lattice. Other things that expand when frozen include silicon, bismuth, antimony, gallium, and germanium for more information: http://en.wikipedia.org/wiki/Properties_of_water#Density_of_water_and_ice
How do cracks effect weathering?
Cracks can accelerate weathering by providing pathways for water to penetrate rocks. As water flows into cracks, it can expand upon freezing, causing the crack to widen. This process, known as frost wedging, can break apart rocks over time.
