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Matter organizes into various phases or states of matter depending on its constituents and external factors like pressure and temperature.Except at extreme temperatures and pressures, atoms form the three classical states of matter: solid, liquid and gas.
In the physical sciences, a phase is a region of material that is chemically uniform, physically distinct, and (often) mechanically separable. In a system consisting of ice and water in a glass jar, the ice cubes are one phase, the water is a second phase, and the humid air is a third phase over the ice and water.
The R-phase is a phase found in nitinol, a shape-memory alloy.It is a martensitic phase in nature, but is not the martensite that is responsible for the shape memory and superelastic effect.
Crystal structure of Ice XI viewed along the c-axis Crystal structure of ice XI (c-axis in the vertical direction) Ice XI is the hydrogen-ordered form of the ordinary form of ice. The total internal energy of ice XI is about one sixth lower than ice I h, so in principle it should naturally form when ice I h is cooled to below 72 K.
After completion, they may attend three years of high school (Sekolah Menengah Atas or SMA). Some high schools offer an accelerated learning program so students who perform well can complete their level in two years.
Pope Pius XI (Italian: Pio XI), born Ambrogio Damiano Achille Ratti (Italian: [amˈbrɔ:dʒo daˈmja:no aˈkille ˈratti]; 31 May 1857 – 10 February 1939), was the head of the Catholic Church from 6 February 1922 to 10 February 1939.