Aerogel is a manufactured material with the lowest known density of any solid. It is derived from a gel in which the liquid component of the gel has been replaced with a gas. The result is an extremely low-density solid with several remarkable properties, most notably its effectiveness as a thermal insulator and its extremely low density. It is nicknamed frozen smoke, solid smoke or blue smoke due to its translucent nature and the way light scatters in the material; however, it feels like expanded polystyrene (styrofoam) to the touch.
Aerogels are produced by extracting the liquid component of a gel through supercritical drying. This allows the liquid to be slowly drawn off without causing the solid matrix in the gel to collapse from capillary action, as would happen with conventional evaporation. The first aerogels were produced from silica gels. Kistler's later work involved aerogels based on alumina, chromia and tin oxide. Carbon aerogels were first developed in the late 1980s.
The least dense liquid would be found at the top.
Water only has one density: 1 gram per centimeter cubed.
rubbing alcohol
Hydrogen
water vapor
Saturn is the least dense of the gas giants, even out of all of the planets in our solar system. Its average density is around 0.7 g/cc (less than water).
The exosphere is the least dense part of the earth's atmosphere.
Callisto is composed of rock and ice and is the least dense of the Galilean moons.
The planet Saturn is the least dense of all the planets.I think this is actually about the " four spheres" on Earth.The four "spheres" of the Earth's surface can be described as:atmosphere, biosphere, hydrosphere, and lithosphere.The least dense is the atmosphere.
Earth, Jupiter is made of gas
Hydrogen is the least dense gas.
'Least' is a comparison word. Compared to iron and lead yes cotton is least dense. Compares to oxygen gas and hydrogen gas, no it is not least dense.
Gas planets are least dense.
Gas
Saturn is the least dense planet in our solar system.
Hydrogen (gas)Oxygen (gas)PumiceWater (liquid)GraniteSteelLeadGold
The molecules are farther apart in a gas.
solid, liquid then gas
Saturn is the least dense of the gas giants, even out of all of the planets in our solar system. Its average density is around 0.7 g/cc (less than water).
Gas is not dense, solids should be dense, liquids are dense, but not as much as solids.
Gas. Because the molecules/atoms are free moving
The order is: - solid (the densest) - liquid - gas - plasma