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Density is an intrinsic property of each type of material, defined as the total mass divided by the total volume. Obviously, two samples of the material which have the same mass and same volume will have the same density, but that is not that answer to this question. This question is about the thermodynamic state of a material and the answer is temperature and pressure.
The thermodynamic state of a system is a set of properties that are reproducible when the thermodynamic variables have been specified.
Density is one such property. Specifying the temperature, pressure and specifying the quantity and type of material of a system determines density at equilibrium.
The equilibrium condition is critically important in that assertion.
It is a fundamental premise of thermodynamics that the state of a simple system at equilibrium can be completely characterized by specifying two independent property variables, such as temperature and pressure, and the quantities of the chemical constituents.
Any system then with the same thermodynamic state has the same intrinsic properties such as density, heat capacity, thermal conductivity, viscosity, and other characteristics.
What else can I help you with?
Would the density of a piece of gold be different depending on its size?
No, the density of gold remains constant regardless of its size. Density is a physical property of a substance that is determined by its mass and volume, so as long as the material remains the same, the density will also remain constant.
What is the only way the density of a pure substance can change?
The density of a pure substance can change by altering its temperature. As temperature increases, most substances expand and therefore decrease in density, whereas as temperature decreases, most substances contract and increase in density.
Does the density of a pure substance affect the drawing of the phase diagram?
No, the density of a pure substance does not affect the drawing of the phase diagram. Phase diagrams are typically determined by the temperature and pressure conditions at which different phases of a substance coexist, regardless of density.
How do the densities of pure substances differ from the densities of mixtures?
There's no correlation between the composition of a substance and its density. Pure ethanol is less dense than potato-leek soup, but pure mercury is more dense. Potato-leek soup is less dense than pure mercury, but concrete is more dense.
If Archimedes had only been able to find a piece of pure gold with a mass one-half that of the crown how could he have determined whether the crown was pure gold?
Archimedes came across concept of density - that is MASS divided by VOLUME. For each substance this ratio is different but a CONSTANT for that substance. Thus the mass you are dealing with is irrelevant if the crown had the same ratio as the piece of pure gold then the crown was pure god, if it did not then the crown was not gold.
Difference between pure and impure substance from density?
A pure substance has a specific density that remains constant regardless of the amount of substance present. An impure substance may have a density that varies depending on the amount and type of impurities present in the substance.
How is the density of a pure substance affected if the mass and or volume are changed?
The density of a pure substance remains constant regardless of changes in mass or volume. Density is a physical property that is inherent to a substance and is calculated as mass divided by volume. As long as the substance remains the same, the density will not change.
If Using density how dowe determine if a substance is pure or not?
If a substance is not pure, the density may, or may not, change, compared to the pure substance.
What is a pure substance classified as?
A pure substance is classified by having a definite and constant composition. The substance can be either an element or a compound, but what makes the substance pure, is that it does not vary.
What classifies a substance as a pure substance?
A pure substance is a substance that is constant throughout. Such as water, tin or sulfur.
What are two reasons why density is a useful property identifying substances?
Density can tell you how "pure" a substance is. Since each substance has a specific density in its "pure" state, having no other substances in its composition, by measuring it density you can tell how pure the mineral or substance is, 99.9% pure gold.
Is The density of a substance is the same for all samples of the substance?
Not necessarily. The temperature of the samples would have to be the same. It can also vary with how pure the substance is.
What are two reasons why density is a useful property for identifying substances?
Density is specific for each substance. Also the measurement is generally simple.
Will diffrent volumes of the same substance have the same density or different densities?
Different volumes of the same substance will have the same density. Density is an intrinsic property of a substance, which means it is constant regardless of the volume it occupies. This relationship is expressed by the formula density = mass/volume.
Would the density of a piece of gold be different depending on its size?
No, the density of gold remains constant regardless of its size. Density is a physical property of a substance that is determined by its mass and volume, so as long as the material remains the same, the density will also remain constant.
What is the only way the density of a pure substance can change?
The density of a pure substance can change by altering its temperature. As temperature increases, most substances expand and therefore decrease in density, whereas as temperature decreases, most substances contract and increase in density.
Does the density of a pure substance affect the drawing of the phase diagram?
No, the density of a pure substance does not affect the drawing of the phase diagram. Phase diagrams are typically determined by the temperature and pressure conditions at which different phases of a substance coexist, regardless of density.
