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Most things are more dense in their solid or frozen form, which would make them sink.
Water is quite unique in that when it freezes it actually becomes less dense. This is due to strong hydrogen bonding in water (ethanol also hydrogen bonds, but not as much). When the water molecules freeze they arrange themselves in a fairly ordered crystal to maximize the hydrogen bonding interactions. This is also why snowflakes show such amazing patterns.
The crystallized structure that water shows when it freezes is the real reason that ice is less dense than water. The structure of water and the way that the molecules attract when frozen, leads to a structure that contains voids where nothing is present. So literally it is like there are tiny air pockets in ice that you cannot get rid of.
See also the Web Links to the left of this answer.
What else can I help you with?
Does ethanol float or sink in water?
Ethanol floats on top of water because it is less dense than water. Ethanol and water do not mix well due to differences in polarity and intermolecular forces.
Which material would require the least amount of energy to change 1kg from a solid to a liquid ethanol aluminum propane or water?
Water would require the least amount of energy to change 1kg from a solid to a liquid because it has a lower melting point compared to the other materials listed (ethanol, aluminum, propane).
A solutions can be only be made with liquid solvent yes or no?
No, solutions can be made with liquid solvents as well as solid solvents such as water or ethanol. Solid solvents can dissolve solutes to create solutions just like liquid solvents can.
Can solute can be a solid a liquid or a gas?
Yes, a solute can be a solid, liquid, or gas. The solute is the substance that is dissolved in a solvent to form a solution. Examples include sugar (solid), salt (solid), ethanol (liquid), and oxygen (gas).
What is the density of water in the solid state compared to that in the liquid state?
The density of water in the solid state (ice) is lower than in the liquid state. This is due to the unique structure of ice, where water molecules form a crystalline lattice with more space between them compared to the closely packed molecules in liquid water. This expansion upon freezing is why ice floats on water.
What is the only solid that floats in its liquid?
The only solid that floats in its liquid is ice. This occurs because the density of ice is lower than the density of liquid water, allowing it to float on the surface.
Is it impossible for a solid to float on a liquid?
no ice floats on water
An ice cube floats in your glass of water just as an iceberg floats in the ocean.What conclusion can you draw about the density of solid water?
liquid water is more dense than solid water
When the water densest as a liquid or solid?
Water is an atypical substance in that its liquid phase is denser than its solid phase. This can be seen as ice floats in a glass of water.
What is added to change a solid to a liquid?
Heat is added to a solid to make a liquid... this is called melting. some additional liquid (water,ethanol,acid…) also change solid into a liquid.
Does ethanol float or sink in water?
Ethanol floats on top of water because it is less dense than water. Ethanol and water do not mix well due to differences in polarity and intermolecular forces.
How do water's relative densities an a solid a liquid deffer from that most other substances?
Solid water, ice, is less dense than liquid water and floats on top. The solid state of other substances is more dense than the liquid state and will sink in the liquid.
Why ice floats on the surface of earth?
Because ICE is less dense than water, it is the only solid which floats on its equivalent liquid.
Does the volume of water change from solid to liquid form?
The water in ice has a larger volume that water in its liquid form. That is why Ice floats. Ice is less dense than liquid water.
What subsance has a solid form that floats on its liquid form?
All pure substances do. Many substances with mixed compositions do also, although not all (for instance, you'll never see cotton as a liquid... or liquid wood...).
How do water's densities as a solid and a liquid differ from that of most other substance?
The solid state of water is less dense than its liquid state, which is why ice floats on water. The solid state of nearly all other substances is more dense than the liquid state and sinks in the liquid state.
Which material would require the least amount of energy to change 1kg from a solid to a liquid ethanol aluminum propane or water?
Water would require the least amount of energy to change 1kg from a solid to a liquid because it has a lower melting point compared to the other materials listed (ethanol, aluminum, propane).
