
For other uses, see Density (disambiguation).
Density (symbol: ρ  Greek: rho) is a denity measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of densit an object equals its total mass divided by its density total volume. An object made from a comparatively dense material (such as iron) will have less density of water volume than an object high density filing of equal mass made from some less dense substance (such as water). The SI unit of density is population density the kilogram per cubic metre (kg/m^{3})
where
 ρ is high density shelving the object's density (measured in kilograms per cubic metre)
 m is the object's total mass (measured in bone density test kilograms)
 V is the object's bone density total volume (measured in cubic metres)
Under specified conditions of temperature and pressure, the density of a density of aluminum fluid is defined as described above. However, the density of a solid material free web site submission keyword density tools can be different, depending on exactly how it is defined. Take sand for example. If you water density gently fill a medium density fiberboard container with sand, and divide the mass of sand by the container volume what is density you get a value termed loose bulk density. If you took this same container and tapped on it repeatedly, allowing the sand to air density settle and pack together, and then calculate the results, you wood density get a value termed density problems tapped or packed bulk density. Tapped bulk density is always greater than or equal to loose bulk density. In both types density of copper of bulk density, some of the volume is taken up by the spaces density column density of air between the grains of sand.
Also, in terms of candy making, density is affected by the melting and cooling processes. Loose granular sugar, like density of steel sand, water density tables contains a lot of air and is not tightly packed, but when high density foam it has melted and starts to boil, the sugar loses its granularity and entrained density of lead air and becomes a fluid. When you mold it to make a smaller, compacted shape, the syrup tightens up and loses more liquid density density calculation air. As it cools, it contracts and gains moisture, making the already heavy candy even more dense.
A more density of metals theoretical definition is also available. Density can be calculated based on crystallographic information and molar mass:
where
 M is molar what is the density of water mass
 N is the number of density conversion atoms in a unit cell
 L is Loschmidt or Avogadro's number
 a, b, c are the libraries high density lattice parameters
The density with respect to density of elements temperature, T, has the following relation:
where
 C is the coefficient of cubic expansion.
Experimentally density can be found high density capacitor by measuring the dry weight ( W_{d} ), the wet natural gas density weight ( W_{w}) and submersed weight ( W_{s}), usually in water.
Contents
 1 Other units
 2 Measurement density lab of Mass
 3 Density of substances
 4 See also

Other units
Mass in terms of the SI base calculating density altitude units is expressed in kilograms per cubic population density map meter (kg/m^{3}). Other units fully within the SI include grams per cubic centimetre (g/cm^{3}) and steel density megagrams per cubic metre (Mg/m^{3}). Since both the litre and the tonne or metric ton are also acceptable definition of density for use with the SI, a wide variety density of materials of units such as kilograms density table per litre (kg/L) are also used. Imperial units or U.S. customary escalating density training units, the units of mass include pounds per cubic foot (lb/ft³), pounds per cubic yard (lb/yd³), pounds per cubic inch (lb/in³), density formula ounces per cubic high density packaging inch (oz/in³), pounds per gallon (for U.S. or imperial gallons) (lb/gal), pounds per U.S. bushel (lb/bu), in some engineering calculations slugs per mexico population density cubic foot, and other less common units.
The maximum mass of pure water at a sodium hydroxide density chart pressure of one standard atmosphere is 999.861kg/m^{3}; this occurs at a crude oil density vs refinery complexity temperature of about 3.98 °C (277.13 K).
From 1901 to 1964, a density of liquids litre was density of mercury defined as exactly the volume of 1 kg of water at maximum mass, and the maximum density of pure water was density worksheets 1.000 000 kg/L (now 0.999 972 kg/L). However, while that definition of the litre was in population density maps effect, just density of different liquids as it is now, the maximum mass of pure water was 0.999 972 kg/dm^{3}. During that period students had to learn the esoteric fact bone density scan that a cubic centimetre and a millilitre were slightly different concrete density volumes, with 1 population density of japan mL = 1.000 028 cm³. (often stated as 1.000 027 cm³ in earlier literature).
Measurement of Mass
A common bone density test results device for measuring fluid mass is a pycnometer. A device for measuring absolute mass of a calculate density solid is a gas pycnometer.
Density of substances
Perhaps the teaching density highest mass known is definition of population density reached in neutron star matter (see neutronium). The singularity at the centre of a black hole, according to general relativity, does not have any macrobrachium density volume, so its mass is undefined.
The densest naturally occurring substance on Earth specific density is iridium, at about 22650 bone mineral density kg/m^{3}.
A table of masses of various substances:
Substance 
Density in kg/m^{3} 
Particles per cubic meter 
Iridium 
22650 
1.06 ×10^{23} 
Osmium 
22610 
7.16 ×10^{22} 
Platinum 
21450 
6.62 ×10^{22} 
Gold (0°C) 
19300 
5.90 ×10^{22} 
Tungsten 
19250 
6.31 ×10^{22} 
Uranium 
19050 
4.82 ×10^{22} 
Mercury 
13580 
4.08 ×10^{22} 
Palladium 
12023 
6.8 ×10^{22} 
Lead 
11340 
3.3 ×10^{22} 
Silver 
10490 
5.86 ×10^{22} 
Copper 
8960 
8.49 ×10^{22} 
Iron 
7870 
8.49 ×10^{22} 
Steel 
7850 

Tin 
7310 
3.71 ×10^{22} 
Titanium 
4507 
5.67 ×10^{22} 
Diamond 
3500 
1.75 ×10^{23} 
Basalt 
3000 

Granite 
2700 

Aluminium 
2700 
6.03 ×10^{22} 
Graphite 
2200 
1.10 ×10^{23} 
Magnesium 
1740 
4.31 ×10^{22} 
PVC 
1300 

Seawater (15°C) 
1025 

Water 
1000 
3.34 ×10^{22} 
Ice (0°C) 
917 
3.07 ×10^{22} 
Polyethylene 
910 

Ethyl alcohol 
790 
1.03 ×10^{22} 
Gasoline 
730 

Liquid Hydrogen 
68 
4.06 ×10^{22} 
Aerogel 
3 
any gas 
0.0446 times density fuel oil high density capacitance metal densities the average molecular mass, hence between 0.09 and ca. 13.1 (at room temperature and calculating density pressure) 
For example air (0°), (25°) 
1.29, 1.17 
Density of density liquids chart air ρ vs. density measurement temperature °C 
T in °C 
ρ in kg/m^{3} 
 10 
1.341 
 5 
1.316 
0 
1.293 
+ 5 
1.269 
+ 10 
1.247 
+ 15 
1.225 
+ 20 
1.204 
+ 25 
1.184 
+ 30 
1.164 
Note the high capacitance density low density of aluminium compared to most other metals. For this reason, aircraft are made of aluminium. Also population density in china. note that air has a nonzero, albeit small, density. Aerogel is the population density map for brazil world's lightest solid.
See also
 ISO 31: bulk density volumic mass
 Dord
 Standard temperature and pressure
 Number density
 Relative density density of brass (specific gravity)
 Charge density
 Energy density
 Population density
Categories: Continuum mechanics  Introductory physics  Fundamental physics concepts  Physical quantity  Physical chemistry