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## Examples of Density

Density is the amount of something in a fixed measurement, such as population per square mile, grams (g) per milliliter (ml), or grams per cubic centimeter.

## Density Examples

• Oil and water – In an oil spill in the ocean, the oil rises to the top because it is less dense than water.
• A Styrofoam cup is less dense than a ceramic cup, so the Styrofoam cup will float in water and the ceramic cup will sink.
• A piece of wood will float on water; but, most rocks are more dense than water, so they will sink.
• Helium is less dense than air, so helium balloons rise.
• Oil floats on vinegar because its density is less.
• When adding motor oil to your car, you need to know the recommended density.

## Substance and Density

Here are examples of substances and their density expressed as grams per cubic centimeter.

### Liquids

• Acetic acid = 1.049
• Acetone = .7846
• Acetonitrile = .782
• Alcohol (rubbing) = 0.79
• Ammonia (liquid) = 0.771
• Automobile oils = .880 – .940
• Benzene = .8738
• Bromine = 3.120
• Butane = .599
• Carbolic acid = .956
• Carbon disulfide = 1.261
• Carbon tetrachloride = 1.584
• Castor oil = .9561
• Chloride = 1.560
• Chlorobenzene = 1.106
• Citric acid = 1.660
• Coconut oil = .924
• Corn syrup = 38
• Cotton seed oil = .926
• Creosote = 1.067
• Crude oil, 48o API = .790
• Dichloromethane = 1.326
• Diethylene glycol = 1.120
• N,N-Dimethylformamide = .949
• Ethane = .570
• Ether = .7135
• Formaldehyde = .812
• Freon (fluorine) refrigerant R-11 = 1.476
• Freon 11 = 1.490
• Gasoline = 0.70
• Glucose = 1.350 – 1.440
• Glycerine = 1.259
• Iodine = 4.927
• Kerosene = .201
• Linolenic acid = .97
• Linseed oil = .9291
• Mercury = 13.6
• Methane = .465
• Methanol = .791
• Milk = 1.020 – 1.050
• Nitric acid = 1.560
• Octane = .6986
• Oil of turpentine = .870
• Olive oil = .800 – .920
• Palmitic acid = .851
• Paraffin = .800
• Pentane = 626
• Phenol = 1.072
• Propane = .4935
• Propylene glycol = .9653
• Rosin oil = .980
• Salt water (25%) = 1.25
• Silicone oil = .760
• Stearic acid = .891
• Sunflower oil = .920
• Tetrahydrofuran = .888
• Turpentine = .8682
• Water (4°C) = 1.0000
• Whale oil = .925

### Solids

• Aluminum = 2.7
• Bismuth = 9.78
• Cast iron (pig) = 7.208
• Copper = 8.3-9.0
• Diamond = 3.01 – 3.52
• Gold = 19.3
• Iron = 7.8
• Magnesium = 1.7
• Osmium = 22.5
• Platinum = 21.4
• Plutonium = 17.35
• Rubber = 1.506
• Silver = 10.49
• Uranium = 18.7
• Window glass = 2.579
• Wood (bamboo) = 0.31 – 0.40
• Wood (oak) = 0.77
• Zinc = 6.92

### Gases

• Air = 0.001293
• Ammonia = 0.000771
• Argon = 0.001784
• Carbon dioxide = .001977
• Carbon monoxide = 0.00125
• Chlorine = 0.0032
• Fluorine = 0.001696
• Helium = 0.000178
• Hydrogen = 0.00009
• Krypton = 0.00373
• Neon = 0.0008999
• Nitrogen = 0.00125
• Nitrogen monoxide = 0.001251
• Oxygen = 0.001429
• Sulphur dioxide = 0.002927

### Other Substances

• Aluminum = 2.739
• Apples = 0.641
• Asbestos = 2.2 – 2.8
• Baking powder = 0.721
• Beeswax = 0.961
• Butter = 0.86 – 0.87
• Cardboard = 0.689
• Chalk (solid) = 2.499
• Fiberglass insulation = 0.032
• Glass = 2.6
• Ivory = 1.83 – 1.92
• Leather = 0.946
• Limestone = 2.739
• Linoleum = 1.18
• Marble (calcium carbonate) = 2.5 – 2.9
• Paper = 0.7 – 1.201
• Paraffin = 0.898
• Plexiglass (Lucite) = 1.16 – 1.20
• Porcelain = 2.3 – 2.5
• Pyrex glass = 2.23
• Quartz (solid) = 2.643
• Snow (compacted) = 0.480
• Snow (freshly fallen) = 0.160
• Steel (1% carbon) = 7.83
• Sugar (brown) = 0.721
• Sugar (granulated) = 0.801
• Sugar (powdered) = 0.801

Density plays many rolls. For example, population density is a way to express how many people are living in a specific area. Density is also a predictor of buoyancy, as something floats in a liquid if it is less dense than the liquid.

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