Density is a measure of how much mass a material has in a specific volume of space. The more squashed together an object’s particles are, the denser it is. Almost all materials will reach their maximum density at very low temperatures and very high pressures. …

lithium, sodium and potassium are less dense than water so they float on the surface of the water. the metals move about the surface of the water and fizz as hydrogen gas is produced.

4 °C

vapor

The molecules of the water are closer together, and this increases the density of the liquid. As the temperature of warm water decreases, the water molecules slow down and the density increases. At 4 °C, the clusters start forming. Thus, the density of water is a maximum at 4 °C.

A regular black hole — that is, one with three times the Sun’s mass — with have an event horizon radius of about 9 km. That means it has a huge density, about two quadrillion grams per cubic cm (2 x 1015).

997 kg/m³

Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.

In general, solids are denser than liquids, which are denser than gases. . The particles in the solid are touching with very little space between them. The particles in a liquid usually are still touching but there are some spaces between them. The gas particles have big distances between them.

Key Concepts. A liquid, just like a solid, has its own characteristic density. The density of a liquid is a measure of how heavy it is for the amount measured. If you weigh equal amounts or volumes of two different liquids, the liquid that weighs more is more dense.

gas

gases

The first chemical element with the lowest density is Hydrogen and the highest density is Osmium.

The same number of particles in a gas spread further apart than in the liquid or solid states. The same mass takes up a bigger volume . This means the gas is less dense. Density also depends on the material….Solids, liquids and gases.

• Bose–Einstein condensate.
• Fermionic condensate.
• Degenerate matter.
• Quantum Hall.
• Rydberg matter.
• Rydberg polaron.
• Strange matter.
• Superfluid.

In 1995, scientists created a new state called ‘Bose-Einstein condensate’ by cooling gas to within a few degrees of absolute zero (-273°C), at which point molecular motion almost stops and the atoms behave en masse like a single atom.

It looks like a dense little lump in the bottom of the magnetic trap/bowl; kind of like a drop of water condensing out of damp air onto a cold bowl. When it first forms, though, the condensate is still surrounded by the normal gas atoms, so it looks a bit like a pit inside a cherry.

A Bose-Einstein condensate is a group of atoms cooled to within a hair of absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so. At that point, the atoms begin to clump together, and enter the same energy states.

Bose–Einstein condensates not actually robust In the movie Spectral, the ultra-cold condensates swirl around, kill people by freezing them from the inside, and defy any attempts to destroy them with conventional weapons. In reality, Bose–Einstein condensates are exactly the opposite of robust.