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  2. OpenSciEd - Wikipedia

    en.wikipedia.org/wiki/OpenSciEd

    OpenSciEd is an American nonprofit organization that creates open source science education materials and curricula for all grades, initially focusing on grades 6-8. [1] OpenSciEd's approach is based on a science storyline, where students build upon their understanding of a topic by asking questions and investigating their answers through ...

  3. SI base unit - Wikipedia

    en.wikipedia.org/wiki/SI_base_unit

    The Celsius scale: the Kelvin scale uses the degree Celsius for its unit increment, but is a thermodynamic scale (0 K is absolute zero). Θ mole: mol amount of substance "The mole, symbol mol, is the SI unit of amount of substance. One mole contains exactly 6.022 140 76 × 10 23 elementary entities.

  4. Elementary particle - Wikipedia

    en.wikipedia.org/wiki/Elementary_particle

    The Standard Model of particle physics contains 12 flavors of elementary fermions, plus their corresponding antiparticles, as well as elementary bosons that mediate the forces and the Higgs boson, which was reported on July 4, 2012, as having been likely detected by the two main experiments at the Large Hadron Collider (ATLAS and CMS). [1]

  5. Mole (unit) - Wikipedia

    en.wikipedia.org/wiki/Mole_(unit)

    Because a dalton, a unit commonly used to measure atomic mass, is exactly 1/12 of the mass of a carbon-12 atom, this definition of the mole entailed that the mass of one mole of a compound or element in grams was numerically equal to the average mass of one molecule or atom of the substance in daltons, and that the number of daltons in a gram ...

  6. Amount of substance - Wikipedia

    en.wikipedia.org/wiki/Amount_of_substance

    The elementary entities are usually molecules, atoms, ions, or ion pairs of a specified kind. The particular substance sampled may be specified using a subscript, e.g., the amount of sodium chloride (NaCl) would be denoted as n NaCl. The unit of amount of substance in the International System of Units is the mole (symbol: mol), a base unit. [1]

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