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  2. WD-40 - Wikipedia

    en.wikipedia.org/wiki/WD-40

    WD-40's formula is a trade secret. [17] The original copy of the formula was moved to a secure bank vault in San Diego in 2018. [18] To avoid disclosing its composition, the product was not patented in 1953, and the window of opportunity for patenting it has long since closed.

  3. Fume hood - Wikipedia

    en.wikipedia.org/wiki/Fume_hood

    For example, Harvard University's Chemistry & Chemical Biology Department ran a "Shut the Sash" campaign, which resulted in a sustained ~30% reduction in fume hood exhaust rates. This translated into cost savings of approximately $180,000 per year, and a reduction in annual greenhouse gas emissions equivalent to 300 metric tons of carbon ...

  4. Escape from Tarkov - Wikipedia

    en.wikipedia.org/wiki/Escape_from_Tarkov

    Escape from Tarkov is a multiplayer tactical first-person shooter video game in development by Battlestate Games for Microsoft Windows. The game is set in the fictional Norvinsk region in northwestern Russia , where a war is taking place between two private military companies (United Security "USEC" and the Battle Encounter Assault Regiment ...

  5. Chlorine - Wikipedia

    en.wikipedia.org/wiki/Chlorine

    As another difference, chlorine has a significant chemistry in positive oxidation states while fluorine does not. Chlorination often leads to higher oxidation states than bromination or iodination but lower oxidation states than fluorination. Chlorine tends to react with compounds including M–M, M–H, or M–C bonds to form M–Cl bonds. [40]

  6. Thermite - Wikipedia

    en.wikipedia.org/wiki/Thermite

    A thermite mixture using iron(III) oxide. Thermite (/ ˈ θ ɜːr m aɪ t /) [1] is a pyrotechnic composition of metal powder and metal oxide.When ignited by heat or chemical reaction, thermite undergoes an exothermic reduction-oxidation (redox) reaction.

  7. D battery - Wikipedia

    en.wikipedia.org/wiki/D_battery

    A battery's capacity depends upon its cell chemistry and current draw. Duracell brand rates its alkaline D cell performance as approximately 20,000 mAh at 25 mA draw, but about 10,000 mAh at 500 mA draw. [5] This effect is generally less pronounced in cells with NiMH chemistry and hardly at all with NiCd. Many commonly available size D ...

  8. Alkali - Wikipedia

    en.wikipedia.org/wiki/Alkali

    In chemistry, an alkali (/ ˈ æ l k ə l aɪ /; from the Arabic word al-qāly, القلوي) is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0.

  9. Cubic crystal system - Wikipedia

    en.wikipedia.org/wiki/Cubic_crystal_system

    It is found as a crystal structure in chemistry where it is usually known as a "type I clathrate structure". Gas hydrates formed by methane, propane, and carbon dioxide at low temperatures have a structure in which water molecules lie at the nodes of the Weaire–Phelan structure and are hydrogen bonded together, and the larger gas molecules ...