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Matter organizes into various phases or states of matter depending on its constituents and external factors like pressure and temperature.In common temperatures and pressures, atoms form the three classical states of matter: solid, liquid and gas.
Forms of matter that are not composed of molecules and are organized by different forces can also be considered different states of matter. Superfluids (like Fermionic condensate) and the quark–gluon plasma are examples. In a chemical equation, the state of matter of the chemicals may be shown as (s) for solid, (l) for liquid, and (g) for gas.
Key stage 2 (KS2) covers years 3, 4, 5 and 6 of compulsory school education in the National Curriculum. It is the longest stage of compulsory school education in England. Children are typically in the age range 7–11. The National Curriculum divides KS2 into lower KS2 (years 3 and 4) and upper KS2 (years 5 and 6).
A typical phase diagram.The solid green line applies to most substances; the dashed green line gives the anomalous behavior of water. In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. [1]
Triple points mark conditions at which three different phases can coexist. For example, the water phase diagram has a triple point corresponding to the single temperature and pressure at which solid, liquid, and gaseous water can coexist in a stable equilibrium ( 273.16 K and a partial vapor pressure of 611.657 Pa ).
The narrower meaning is quark matter that is more stable than nuclear matter. The idea that this could happen is the "strange matter hypothesis" of Bodmer [45] and Witten. [46] In this definition, the critical pressure is zero: the true ground state of matter is always quark matter.
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle . [ 1 ] It can also be defined as the change in the state of water vapor to liquid water when in contact with a liquid or solid surface or cloud condensation nuclei within ...
Thermodynamic states are amongst the fundamental or primitive objects or notions of the scheme, for which their existence is primary and definitive, rather than being derived or constructed from other concepts. [1] [2] [3] A thermodynamic system is not simply a physical system. [4]