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As water is cooled from 4 degrees C to 0 degrees C its density?
4° C is the temperature of maximum density for water. Change temperature in either direction from there -- whether you warm it or cool it -- the density decreases.
How do you compare substances to water using a mass to volume relationship?
You can compare the density, which is mass/volume. For pure water at normal atmospheric pressure this is approximately 1 gram per cm3 although in fact it is has a maximum value of 0.999 972 0 g/cm3 at 4 deg C. At 100 deg C it is 0.958 4 g/cm3 and at 0 deg C it is 0.999 839 5 g/cm3 .
Can a temperature on the celsius scale go below zero?
The Celsius or centigrade scale runs from -273 deg C to you name it. 0 deg C is the freezing point of pure water 100 deg C is the boiling point of water. 15,000,000 deg C is the core temperature of the Sun The Kelvin scale (K) uses the same units. -273 deg C = 0 deg K. 0 deg K is also known as absolute zero, the point at which no further heat energy can be extracted from a system
What is the number difference between Fahrenheit and Celsius?
There is not a constant difference. At the freezing point of water, 0 deg Celsius = 32 deg Fahrenheit - a difference of 32. At the boiling point of water = 100 deg C = 212 deg F, the difference is 180.
What is negative temperature cofficient?
A negative temperature coefficient indicates that the dependent variable, the variable of interest increases when the temperature decreases and conversely. This could, for example, be the density of an object (excluding water at 0 - 4 deg C). As the temperature goes up the volume increases so the density decreases.
How temperature affect the density of water?
The density of water increases as its temperature increases from 0 deg C to 4 deg C (the anomalous expansion phase). Above 4 deg C, the density decreases with temperature.
What is the density if water is cooled fron 4 degrees celcius to 0 degrees celcius?
decreases
What form will water be at 2 degree centigrade?
At 2 deg. C water is a mainly liquid. Some of it might 'disappear' as dry air may be humidified by the water. Ice, however is not to be expected, as pure water melts at 0 deg. C. Contamination of the water (salt) may lower this melting point. The freezing of water doesn't have to take place at 0 deg. C. Pure water can be super-cooled at temperatures as low as -40 deg. C before it freezes. Contamination by small particles helps water freezing at higher sub-zero temperatures. Agitating super-cooled water is also a means of freezing it instantly.
As water is cooled from 4 degrees C to 0 degrees C its density?
4° C is the temperature of maximum density for water. Change temperature in either direction from there -- whether you warm it or cool it -- the density decreases.
Which will have the greater density water at 40 degrees Celsius or water at -20 degrees Celsius?
Water at -20 degrees Celsius; heat will expand matter, so at +40 degrees Celsius, water would have less density. * * * * * That would be true if there were no phase change. Unfortunately for the above answer, water freezes at 0 deg C and that phase change is accompanied by an expansion. As a result, water at 40 deg C is denser that water (ice) at -20 deg C.
How does the density of water change as a function of temperature?
Water is most dense at +4 deg centigrade. When it freezes it becomes lighter.
Is 0 degrees celsius is the evaporation of water?
Water can evaporate at 0 deg C. It is the triple point of H2O. More accurately 0.01 deg C
What is the physical state of water at 0 and deg celsius?
Water freezes at 0 degrees Celsius
Why do some substances change when they are heated or cooled?
A solid or liquid would not change in density because the volume would not change. The density of a gas would increase when cooled and decrease when heated provided the volume is allowed to change as a function of temperature. However, density of a gas is generally not measured because it is not a useful metric to use.* * * * *That is a rubbish answer.Almost all solids or liquids expand when heated. (Pure water under "normal" circumstances has an anomalous phase between 0 and 4 deg C). So heating will increase the volume thereby decrease the density.
How do you compare substances to water using a mass to volume relationship?
You can compare the density, which is mass/volume. For pure water at normal atmospheric pressure this is approximately 1 gram per cm3 although in fact it is has a maximum value of 0.999 972 0 g/cm3 at 4 deg C. At 100 deg C it is 0.958 4 g/cm3 and at 0 deg C it is 0.999 839 5 g/cm3 .
When does water boil and freeze on the celsius scale?
At normal pressure, pure water boils at 100 deg C and freezes at 0 deg C.
Why does ice at 0 degrees Celsius feel colder to the mouth than water at 0 degrees Celsius?
This is because the ice at 0 deg C is colder to the extent that the latent heat of freezing has been removed from the water at 0 deg C.
