1 Answer. Gases typically have exceptionally low densities.

Gas densities are somewhere around 1 g/L at room temperature and pressure- about 1/1000th the density of liquids. Note that you can very quickly decide which gas is going to be densest. If they behave ideally, all have the same molar volume at STP and the densest gas will be the one with the highest molar mass.

There are only 14 gases and vapors with a vapor density less than one, meaning that they are lighter than air. These are acetylene, ammonia, carbon monoxide, diborane, ethylene, helium, hydrogen, hydrogen cyanide, hydrogen fluoride, methane, methyl lithium, neon, nitrogen, and water.

Liquids. The particles in liquids are close together. Although they are randomly arranged, they are still tightly packed, giving liquids high densities. The density of a substance as a liquid is usually only slightly less than its density as a solid.

Lowest density liquid in nature Self-binding of helium-3 in two dimensions. Quantum matter consisting of light particles can stay liquid or gaseous without solidifying even at absolute zero. Such matter is termed a quantum liquid or quantum gas.

Since the same volume of corn syrup is heavier than water, it is more dense and sinks in water. Explain that to compare the density of oil and water you need to compare the weight of equal volumes of water and oil.

Demonstrate the density of two liquids by comparing the mass of equal volumes.

1. Remove the candles from each liquid and tell students that each cup contains the same volume of liquid.
2. Carefully place the cups of water and alcohol on opposite ends of a balance.

The volume of milk is ½ pint equal to 236 ml or 0.000236 m3. Density = Mass/Volume. Therefore density = 0.2447 kg/ 0.000236 m3 = 1036.86 kg/m3.

1.03 g/cm3