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  2. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This article needs attention from an expert in chemistry. The specific problem is: Incomplete list. WikiProject Chemistry may be able to help recruit an expert.

  3. Chemical weapon - Wikipedia

    en.wikipedia.org/wiki/Chemical_weapon

    A chemical weapon (CW) is a specialized munition that uses chemicals formulated to inflict death or harm on humans. According to the Organisation for the Prohibition of Chemical Weapons (OPCW), this can be any chemical compound intended as a weapon "or its precursor that can cause death, injury, temporary incapacitation or sensory irritation through its chemical action.

  4. Chemical warfare - Wikipedia

    en.wikipedia.org/wiki/Chemical_warfare

    Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons.This type of warfare is distinct from nuclear warfare, biological warfare and radiological warfare, which together make up CBRN, the military acronym for chemical, biological, radiological, and nuclear (warfare or weapons), all of which are considered "weapons of mass destruction" (WMDs), a term that ...

  5. Combat Estimate - Wikipedia

    en.wikipedia.org/wiki/Combat_Estimate

    The Combat Estimate, also known as the Seven Questions is a sequence of questions used by military commanders, usually in contact with the enemy, to plan their response, such as a platoon attack. [ 1 ] [ 2 ] It provides a means for formulating a plan that meets the exigencies of battle, even in very difficult circumstances.

  6. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  7. Improvised explosive device - Wikipedia

    en.wikipedia.org/wiki/Improvised_explosive_device

    An improvised explosive device (IED) is a bomb constructed and deployed in ways other than in conventional military action. It may be constructed of conventional military explosives, such as an artillery shell, attached to a detonating mechanism.

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  9. Explosive - Wikipedia

    en.wikipedia.org/wiki/Explosive

    The UN GHS Hazard Class and Division (HC/D) is a numeric designator within a hazard class indicating the character, predominance of associated hazards, and potential for causing personnel casualties and property damage. It is an internationally accepted system that communicates using the minimum amount of markings the primary hazard associated ...

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