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When water freezes it sets up a crystal structure which aligns the hydrogen atoms of one molecule with the lone electron pairs on nearby oxygen atoms in other molecules. This arrangement as an optimal distance which determines the density of ice. This packing structure has an 'energy balance' associated with it that is a compromise between the attraction and repulsion of all involved atoms and their configurations with the water molecule.
When heat is added to ice the energy of the thermal vibrations of the individual molecules exceeds the repulsion energy between molecules but not their attractive energy. As I said before the packing structure is a balance of many factors and not all these factors have the same energy threshold. Therefore when ice melts it is easier for water to contract (become denser) then it is for it to expand. Once the temperature exceeds 4'C however the thermal energy exceeds all inter-molecular forces and 'ordinary' thermal expansion occurs.
What else can I help you with?
Does water expand when warmed?
Yes, water expands when it is warmed. As the temperature of water increases, the molecules gain energy and move faster, causing them to spread out and take up more space, resulting in expansion. This is known as thermal expansion.
Is the temperature at which water boils at the seashore is less or greater than that at a Himalayan peak?
The boiling point of water decreases with altitude, so the temperature at which water boils would be lower at a Himalayan peak compared to the seashore. This is because air pressure decreases with increasing altitude, which affects the boiling point of water.
How much energy is required to raise the temperature of one liter of water 1 degree centigrade?
The specific heat of water is 4.179 Joules per gram per degree Centigrade. The density of water is 1 gram per cubic centimeter, so one liter is 1000 grams. This means it takes 4179 Joules to raise one liter one degree Centigrade.
At what temperature does water have its lowest volume?
About 4 degrees Centigrade.About 4 degrees Centigrade.About 4 degrees Centigrade.About 4 degrees Centigrade.
When air bubbles rises in water its volume increases what happens to its mass and density?
The mass of the air bubbles remains the same as they rise in water, but their density decreases. This is because as the volume of the air bubbles increases, they displace more water, causing their density to decrease relative to the surrounding water.
What 2 ways can you change density of water?
By cooling it below 4 degrees centigrade whereupon its density will decrease. By heating it above 4 degrees centigrade whereupon its density will decrease. Water is at its densest at about 4 degrees centigrade.
What degree does it take to freeze water?
At Zero degrees centigrade for pure water.
What is Anomalous expansion of water?
The expansion of water when it is cooled from four degree centigrade to zero degree centigrade is known as "anomalous expansion of water." The unusual behaviour of water, when it expands below 4° celsius to 0° is called anmalus expansion of water.
What integer represents the boiling point of water in degree centigrade?
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What is the boiling point of 2 liter of water in centigrade?
At 1 atmosphere of pressure, the boiling point of water is 100 degrees Celsius (Centigrade). The volume of water does not matter.
Why is the centigrade scale named the centigrade scale?
It is based on units of ten, and the boiling point of water on the centigrade scale is 100 degrees. That's what centigrade means: Centi=100. Gradus=step or degree.
What form water will be at four degree centigrade?
At standard atmospheric pressure, Water (H2O) will be in the liquid state.
What is a boiling point of a liquid substance?
every liquid has its own boiling point like water has its boiling point of 100 degree centigrade while milk has boiling point of 60 degree centigrade.
Does water expand when warmed?
Yes, water expands when it is warmed. As the temperature of water increases, the molecules gain energy and move faster, causing them to spread out and take up more space, resulting in expansion. This is known as thermal expansion.
Is the temperature at which water boils at the seashore is less or greater than that at a Himalayan peak?
The boiling point of water decreases with altitude, so the temperature at which water boils would be lower at a Himalayan peak compared to the seashore. This is because air pressure decreases with increasing altitude, which affects the boiling point of water.
How do you know that water evaporates?
The volume of liquid water decrease.
How much energy is required to raise the temperature of one liter of water 1 degree centigrade?
The specific heat of water is 4.179 Joules per gram per degree Centigrade. The density of water is 1 gram per cubic centimeter, so one liter is 1000 grams. This means it takes 4179 Joules to raise one liter one degree Centigrade.
