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  2. State (polity) - Wikipedia

    en.wikipedia.org/wiki/State_(polity)

    Politics portal. v. t. e. A state is a political entity that regulates society and the population within a territory. [1] Government is considered to form the fundamental apparatus of contemporary states. [2] [3] Most often, a country has a single state, with various administrative divisions.

  3. State of matter - Wikipedia

    en.wikipedia.org/wiki/State_of_matter

    In physics, a state of matter is one of the distinct forms in which matter can exist. Four states of matter are observable in everyday life: solid, liquid, gas, and plasma. Many intermediate states are known to exist, such as liquid crystal, and some states only exist under extreme conditions, such as Bose–Einstein condensates and Fermionic ...

  4. Montevideo Convention - Wikipedia

    en.wikipedia.org/wiki/Montevideo_Convention

    Montevideo Convention at Wikisource. The Montevideo Convention on the Rights and Duties of States is a treaty signed at Montevideo, Uruguay, on December 26, 1933, during the Seventh International Conference of American States. The Convention codifies the declarative theory of statehood as accepted as part of customary international law. [2]

  5. Chemical element - Wikipedia

    en.wikipedia.org/wiki/Chemical_element

    A chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions. The basic particle that constitutes a chemical element is the atom. Chemical elements are identified by the number of protons in the nuclei of their atoms, [1] known as the element's atomic number. [2]

  6. Plasma (physics) - Wikipedia

    en.wikipedia.org/wiki/Plasma_(physics)

    Plasma (from Ancient Greek πλάσμα (plásma) 'moldable substance' [1]) is one of four fundamental states of matter (the other three being solid, liquid, and gas) characterized by the presence of a significant portion of charged particles in any combination of ions or electrons.

  7. State formation - Wikipedia

    en.wikipedia.org/wiki/State_formation

    State formation is the process of the development of a centralized government structure in a situation in which one did not exist. State formation has been a study of many disciplines of the social sciences for a number of years, so much so that Jonathan Haas writes, "One of the favorite pastimes of social scientists over the course of the past ...

  8. Sovereign state - Wikipedia

    en.wikipedia.org/wiki/Sovereign_state

    v. t. e. A sovereign state is a state that has the highest authority over a territory. [1] International law defines sovereign states as having a permanent population, defined territory, a government not under another, and the capacity to interact with other states. [2] It is commonly understood that a sovereign state is independent. [3]

  9. List of states of matter - Wikipedia

    en.wikipedia.org/wiki/List_of_states_of_matter

    List of states of matter. 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. Complex molecules can also form various mesophases such as liquid ...