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How does density of a substance change with temperature and name a substance that does not strictly follow this rule.?
Wiki User
∙ 13y ago
In general, as the temperature of a substance increases, it's density decreases. One exception of this is water. as liquid water approaches it's freezing point, the water molecules rearrange themselves into a lattice structure, actually making it less dense. This is why ice floats on top of water.
Wiki User
∙ 13y ago
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What is the only way the density of a pure substance can change?
By changing the temperature as you can't add anything to a pure substance.
Why is the temperature important in density gradient centrifugation?
Temperature and density are inversely proportional because increase in temperature increases the volume of a substance and thereby decreasing the density. In density gradient centrifugation, any change in temperature changes the sedimentation of a substance and therefore it may be in aqueous solution rather than pelleted or Vice verse
Temperature a substance will change from liquid to gas?
Yes, only if the temperature of a substance is increased.
What does not change in solid matter?
Physical properties can be tested without changing the substance a new substance. Color, density, volume and melting and/or boiling point are examples of physical properties that can be observed and/or tested.
What two factors effect the speed of sound?
The speed of sound varies with various factors such as temperature,nature of the material,physical state of the substance,etc.
What is the only way the density of a pure substance can change?
By changing the temperature as you can't add anything to a pure substance.
Why is the temperature important in density gradient centrifugation?
Temperature and density are inversely proportional because increase in temperature increases the volume of a substance and thereby decreasing the density. In density gradient centrifugation, any change in temperature changes the sedimentation of a substance and therefore it may be in aqueous solution rather than pelleted or Vice verse
Does a substance change density if it changes physically?
Depends on what you consider a physical change. Substances change their density when they change their state of matter. When the temperature rises, substances usually expand, wich leads to the density decreasing. When the temperature falls, substances contract, increasing the density. Exception would be water, as it shows an anomaly occurring near 273K
Why does the density of a substance not change no matter how much of the substance you have?
Because density is a "ratio".
How can you change density of a substance?
You can change the density of a substance by changing its volume. Density is equivalent to mass over volume. So changing the volume affects density.
Do properties remain the same regardless of the amount of the substance?
Intensive properties remain the same with a change in the amount of a substance - for example: temperature and density Extensive properties do not remain the same with a change in the amount of a substance - for example: mass and volume
What happens to the density of a given substance if you increase the amount of substance that you have?
No change: Density is a property of the substance (physical property), which is not changed by the amount of substance.
How does the volume and density of a substance change when it is heated?
The volume of a substance increases when heated, causing a decrease in density.
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.
How can you change the overall density of an object?
In a simple way, since density = mass /volume, the density of an object can be changed by changing either mass or volume of an object .
If 2 pure substances have the same density are they same substance?
No, at a different temperature and pressure the volume of any substance increases or decrease (depending on Temperature and Pressure). Also the severity of the volumetric change depends on the state of the substance. Because density=mass/volume and the volume changes while the mass doesn't the density WILL change slightly in solid phase, noticeably in the liquid phase and significantly in the gas phase regardless of weather or not the substance is pure
Process that does not change the identity of a substance?
density
