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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
What else can I help you with?
Does freezing an object cause an object to expand?
Yes, freezing an object can cause it to expand. Water, for example, expands when it freezes, which is why ice cubes take up more space than liquid water. This is due to the formation of a crystalline structure in the freezing process, which requires the molecules to move further apart.
What do substances do when heated because of the molecules?
they expand
Does aluminium swell?
No, although it does expand with heat as do most substances.
How do they prevent substances to solidify?
By maintaining the temperature over the freezing point.
What is freezing mixture?
A freezing mixture is a combination of substances that, when mixed together, can lower the temperature significantly, often below the freezing point of water. Commonly, it consists of ice and salt, where the salt lowers the freezing point of the ice, allowing the mixture to reach temperatures suitable for freezing or chilling other substances. This technique is frequently used in laboratories and culinary applications, such as making ice cream.
Does properly air-entrained cement paste shrink or expand upon freezing?
It will shrink!
Do Most liquids do not expand upon freezing?
No only water it's the odd one.
What does freezing and thawing of rocks do to them?
Freezing a rock would shrink it some (contract) while the thawing would expand it. This applies to most substances, water being the obvious exception.
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.
When do substances expand?
Yes.
What other substances have anomalous expansion?
Like water, antimony, bismuth, silicon, and gallium also exhibit anomalous expansion behavior, where they expand upon solidification. This is due to the unique arrangement of atoms in their crystal structure, which causes them to expand instead of contract when transitioning from a liquid to a solid state.
How does freezing water affect the physical properties of the substance?
Freezing water causes it to expand and form a solid structure, changing its physical properties. The solid ice is less dense than liquid water, which is why ice floats. Additionally, freezing water can affect its transparency and ability to dissolve other substances.
Does freezing an object cause an object to expand?
Yes, freezing an object can cause it to expand. Water, for example, expands when it freezes, which is why ice cubes take up more space than liquid water. This is due to the formation of a crystalline structure in the freezing process, which requires the molecules to move further apart.
Do substances expand on heating?
yes
Do substances expand when hot?
Yes.
How does the volume of material chage as more heat energy is added to it?
Most substances expand as their temperature increases. One exception that I can think of is water, when it is near freezing. Water at 4°C will expand when cooled to 0°C, then as it freezes to ice it expands. This is why ice floats in water.
Does freezing cause water to expand and crack rock?
yes
