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physical object > natural object > collection of particles > phase of matter > solid

solid
subject			fact

solid	has definition a high density collection of particle which do not move relative to one another (except for thermal oscillations)
	is a kind of phase of matter
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of solid :

• metal (43 kinds, 352 facts) - To an astronomer, a metal is any element heavier than hydrogen and helium; thus, not only are iron and copper metals, but so are elements like oxygen and neon., As used in stellar spectroscopy, any element heavier than helium.
• metallic hydrogen (2 facts) - A hypothetical form of hydrogen in which the molecules have been forced by extremely high pressures to assume the lattice structure typical of metals. It is estimated that as much as 40% of Jupiter's mass (but not more than 3% of Saturn's) may be in the form of metallic hydrogen.
• quantum solid (2 facts) - A degenerate gas in which the densities are so great that the nuclei are fixed with respect to each other so that they resemble a crystalline lattice.