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  2. International General Certificate of Secondary Education

    en.wikipedia.org/wiki/International_General...

    [12] The change from an A*-G grading system to a 9-1 grading system by English GCSE qualifications has led to a 9-1 grade International General Certificate of Secondary Education being made available. [13] Before, this qualification was graded on an 8-point scale from A* to G with a 9th grade “U” signifying “Ungraded”.

  3. Henderson–Hasselbalch equation - Wikipedia

    en.wikipedia.org/wiki/Henderson–Hasselbalch...

    In chemistry and biochemistry, the Henderson–Hasselbalch equation = + ⁡ ([] []) relates the pH of a chemical solution of a weak acid to the numerical value of the acid dissociation constant, K a, of acid and the ratio of the concentrations, [] [] of the acid and its conjugate base in an equilibrium.

  4. Mathematical chemistry - Wikipedia

    en.wikipedia.org/wiki/Mathematical_chemistry

    Mathematical chemistry [1] is the area of research engaged in novel applications of mathematics to chemistry; it concerns itself principally with the mathematical modeling of chemical phenomena. [2] Mathematical chemistry has also sometimes been called computer chemistry, but should not be confused with computational chemistry.

  5. Advanced Extension Award - Wikipedia

    en.wikipedia.org/wiki/Advanced_Extension_Award

    [3] [4] In June 2011 Edexcel announced that the AEA was being extended further for mathematics, until June 2015, which was later extended until 2018. [ 5 ] In 2018, Edexcel introduced a new specification, meaning the Advanced Extension Award in mathematics would continue to be available to students in 2019 and beyond, as a qualification aimed ...

  6. Exam - Wikipedia

    en.wikipedia.org/wiki/Exam

    This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Educational assessment For other uses, see Exam (disambiguation) and Examination (disambiguation). Cambodian students taking an exam in order to apply for the Don Bosco Technical School of Sihanoukville in 2008 American students in a computer fundamentals class taking an online test in ...

  7. IB Middle Years Programme - Wikipedia

    en.wikipedia.org/wiki/IB_Middle_Years_Programme

    Chemistry* Physics* Integrated Sciences Mathematics Mathematics Extended Mathematics* Interdisciplinary Interdisciplinary learning** Internally marked, externally moderated with Dynamic sampling Course Work ePortfolio Language Acquisition Arabic Chinese (Mandarin) Dutch English French German Hindi Indonesian Spanish Arts [19] [20] Visual art Media

  8. Dying To Be Free - The Huffington Post

    projects.huffingtonpost.com/dying-to-be-free...

    The last image we have of Patrick Cagey is of his first moments as a free man. He has just walked out of a 30-day drug treatment center in Georgetown, Kentucky, dressed in gym clothes and carrying a Nike duffel bag.

  9. Chemical reaction network theory - Wikipedia

    en.wikipedia.org/wiki/Chemical_reaction_network...

    Dynamical properties of reaction networks were studied in chemistry and physics after the invention of the law of mass action.The essential steps in this study were introduction of detailed balance for the complex chemical reactions by Rudolf Wegscheider (1901), [1] development of the quantitative theory of chemical chain reactions by Nikolay Semyonov (1934), [2] development of kinetics of ...

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