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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.
The term phase is sometimes used as a synonym for state of matter, but it is possible for a single compound to form different phases that are in the same state of matter. For example, ice is the solid state of water, but there are multiple phases of ice with different crystal structures , which are formed at different pressures and temperatures.
In bulk, matter can exist in several different forms, or states of aggregation, known as phases, [48] depending on ambient pressure, temperature and volume. [49] A phase is a form of matter that has a relatively uniform chemical composition and physical properties (such as density, specific heat, refractive index, and so forth).
Iron-carbon phase diagram, showing the conditions necessary to form different phases. Distinct phases may be described as different states of matter such as gas, liquid, solid, plasma or Bose–Einstein condensate. Useful mesophases between solid and liquid form other states of matter. Distinct phases may also exist within a given state of matter.
A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust. Major biogeochemical cycles include the carbon cycle , the nitrogen cycle and the water cycle .
Baryonic matter forms about 4% of the total energy density of the observable universe, with an average density of about 0.25 particles/m 3 (mostly protons and electrons). [112] Within a galaxy such as the Milky Way , particles have a much higher concentration, with the density of matter in the interstellar medium (ISM) ranging from 10 5 to 10 9 ...
The addiction involves genetic predisposition, corrupted brain chemistry, entrenched environmental factors and any number of potential mental-health disorders — it requires urgent medical intervention. According to the medical establishment, medication coupled with counseling is the most effective form of treatment for opioid addiction.
Liquid crystal (LC) is a state of matter whose properties are between those of conventional liquids and those of solid crystals.For example, a liquid crystal can flow like a liquid, but its molecules may be oriented in a common direction as in a solid.
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