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# How do you use density to identify an unknown object?

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###### 2011-09-26 05:06:10

Compare the density of the unknown object to the density of known substances.

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## Related Questions

pretty sure this is right but, you can because once you have the density you can use a chart with substances on it then you can match the with the unknown substance. at least that's what we do in my class...i think?

There are a range of them Colour, hardness, streak, luster, density, crystal shape etc.

density and be used to identify an element because of the types of molecules. Use D = M v

You cannot use just weight to identify a material.You can use density to identify materials.

Yes, it is possible. To identify an object using its density you need only a few things: an accurate scale to find the mass of the object; a graduated cylinder large enough to accommodate whatever object you have; the object itself; and a liquid. Any liquid can be used for this, however, if the object floats then the calculation becomes slightly more complicated. I use water. First weigh the object, then immerse it in the liquid. Note how much water is displaced. Divide the mass of the object by the volume of the liquid and you'll find the density. Then compare that density to the list of known densities to identify the object. Pretty simple! physical and chemical properties can be uesed to identify substance. I used: http://www.ehow.com/how-does_5187289_density-used-identify-substances.html Ans: Not sure you can actually identify the substance from its density alone: you would have to know its state too. For example, water in gaseous form would be an entirely different density to water in solid form wouldn't it? So no, you cannot identify a substance from its density, without other information. The best way to identify a substance is often through spectroscopy, in which the radiation either absorbed or given off from a chemical can determine which substances are present. This is what happens for the sun.

When you have the density of both the object and the fluid, just see which has a higher density. If the object has a higher density than the fluid, the object will sink. If the object has a lower density than the fluid, the object will float.

The Tools You need to find Density of an object is you divide the mass of the object with the volume of the object

Usually, an object can float if it has a lower density than the liquid it is in.

If the density of an object is lower than water then it will float, if the density is higher it will sink.

If the density of the object is less than the density of the water it is placed in, the object will float and vice versa.

Speed decreases. Instead saying density it will be nice to use the term optical density

If the object has less density than the liquid in which it will be placed, then it will float. If the object has a greater density than the liquid, then it will sink.

You cannot use surface area to calculate density. Density is a calculation comparing TOTAL area and weight of an object. In short you must use the total volume of the object when calculating the density.

Yes, the desity of an object and the chemical reactions it will under go are what scientists use to determine its composition

You can use the basic definition of an object: divide its mass by its volume.

As part of their assignment, Angela and Mia had to calculate the weight and density of their object.

The density of water is 1.00, so if the density of the object is greater than one, it will sink. If the density of the object is less than 1.00, then it will float. If the density of the object equals or is like 1.01, 1.02, 0.99, or 0.98, then it will be suspended.

To find the volume of an object use the formula v=dm where Volume=Density x Mass To find the mass of an object use the formula m=dv where Mass=Density x Volume

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