What is the realtionship between mass and density?

Question

What is the realtionship between mass and density?
i want to ask what is mass and what is density ?
what is their realation and their difference?
please use simple english to explain to me and please give me some examples.I am only 10-17 years old , plz make the answer easy to understand but i want the full meaning. Thanks a lot for your help=]
i want the full explnation of density and mass and please use more words and examples to make me understand the meaning of them .thank you !!!!

Answer 1

the most common formulas involving mass and density are:

D=M/V (D is density, M is mass, and V is volume.
the "/" sign means division)

you can use this equation to find other equations.

VD=M (Volume times Density equals Mass)

M/D=V (Mass divided by Density equals Volume)


as far as definitions for mass and density, mass is how much matter is contained in an object and density is the ratio of the amount of matter to the amount of space it takes up.

Answer 2

Mass is defined as the amount of matter an object has. Thus it is different from Weight, which depends on the gravitational force acting on the object. The mass of an object does not vary, while its weight can vary depending on where the object is (your weight will be different on Earth from when you are on the Moon, for instance)

Density is a measure of how much mass an object has per volume occupied.

Density = Mass/Volume

There are several on-line tutorials on mass, weight, volume and density which could help explain in detail. Some of them are

http://www.edinformatics.com/math_science/density.htm
http://www.physics.ucla.edu/k-6connection/Mass,w,d.htm

Hope these help.

Answer 3

Imagine you're looking at some gas in a vacuum box, really close up. You can see that this gas has 10 million molecules and the size of the box is 1 cm cubed (i.e. it's width, height and depth are all 1 cm). Now, if we argue that 100 million molecules of gas weigh one milligram, the MASS of the gas is 0.1 milligrams. The DENSITY of the gas is 0.1 milligrams per cubic centimeter.

Now, imagine you somehow take all this gas out of the box, and put it into a larger box, one that is 2 cubic centimeters in volume. The mass of the gas is the same, you still have 10 million molecules, which still have a mass of 0.1 grams. However, the molecules now have twice as much space to move around in, so the density is halved. Now we have 0.1mg in 2 cubic centimeters, so our density is now 0.05 mg per cubic centimeter.

In conclusion then:

Mass is the amount of stuff that is there, the amount of stuff that an object contains.
Size is the amount of space the object takes up (in our example, this is the size of the vacuum box)

Density is the amount of stuff that is in a particular area of space, and can be calculated by dividing the mass of an object, by it's size.

Answer 4

density is mass per unit volume.that is, how much matter do u have in a given space.hence mass n density have direct relation.more is mass more is density ,given the volume or the space it occupies remains the same or constant.take an example of small candies in a container of capacity 50 candies.if u put 10 candies the density of candies will be less and if u put whole 50 then density will be maximum.in this case,the space remains the same but mass is increasing as we increase the no.of candies.here candies denote the mass and volume of container denotes the constant space.

Answer 5

The mass of an object is the weight.
The density of the object represents how much the atoms within the object are packed.
For example a kilo of polystyrene and a kilo of lead have identical mass, but due to their density, a kilo of polystyrene might take up a space of a cubic metre, but because of their difference in densities a kilo of lead would take up a few cubic centimetres

Answer 6

Mass is to Density as Large is to Heavy.
Like the age old question. Which weighs more? A pound of feathers or a pound of led?

They both weigh a pound, but in a natural state the feathers will take up more mass, and the led will be more dense.
Something with tightly compacted molecules will be "more" dense than something with loosely compacted molecules.

Answer 7

MASS IS WEIGHT. DENSITY IS HOW DENSE AN OBJECT IS. FOR EXAMPLE... ONE POUND OF LEAD AND ONE POUND OF ALUMINUM HAVE THE EXACT SAME MASS. THE MASS IS ONE POUND. YOU WILL HAVE A MUCH LARGER CHUNK OF ALUMINUM TO MAKE UP THE ONE POUND, SO THE WEIGHT IS MORE "DISTRIBUTED" ACROSS THE METAL. THE LEAD ON THE OTHER HAND IS MUCH MORE DENSE (THE MOLECULES AND ATOMS ARE MUCH CLOSER TOGETHER) SO IT WOULD BE MUCH SMALLER. EVEN THOUGH THEY BOTH HAVE THE SAME MASS, THE LEAD HAS A HIGHER DENSITY. THINK OF DENSITY AS THE MASS (WEIGHT) DIVIDED BY AN OBJECTS VOLUME. THE MASS MIGHT BE ONE POUND, BUT THE DENSITY MIGHT BE ONE POUND PER CUBIC INCH.

Answer 8

Mass is more about size - density more about weight, though this is hardly a scientific explanation. See the link for more technical info.

Answer 9

Mass is number of pounds or oz, etc.
Density - number of pounds etc per volume unit

2 things weighting the same may have different density. The one, which is be less dense (e.g. fuzz), has larger volume (e.g. than nails).

If to take the same volume of fuzz and nails, nails will weight more because of more concentrated mass per volume, i.e. density.

Answer 10

I thought I'd try a non-mathematical answer.

Mass is the amount of 'stuff' the object is made from.
Density is how tightly that 'stuff' is packed.
Volume is the amount of space taken up by an object.
Weight (not to be confused with but related to mass) is the effect of a gravitational field on an object.