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2. College Level Examination Program - Wikipedia

   en.wikipedia.org/wiki/College_Level_Examination...

   The tests are free to U.S. military service members and some veterans. [7] [8] There is an additional fee of $10 for the optional essay portion of some of the exams. Each test usually corresponds to a one or two semester introductory course on the topic, though the Spanish, French, and German Language exams can be used to earn up to 12 credits.

3. Chemistry Education Research and Practice - Wikipedia

   en.wikipedia.org/wiki/Chemistry_Education...

   Chemistry Education Research and Practice is a quarterly peer-reviewed open access academic journal published by the Royal Society of Chemistry covering chemistry education. The editor-in-chief is Gwen Lawrie of the University of Queensland .

4. GRE Chemistry Test - Wikipedia

   en.wikipedia.org/wiki/GRE_Chemistry_Test

   The GRE subject test in chemistry is a standardized test in the United States created by the Educational Testing Service, and is designed to assess a candidate's potential for graduate or post-graduate study in the field of chemistry. It contains questions from many fields of chemistry. 15% of the questions will come from analytical chemistry ...

5. Open Babel - Wikipedia

   en.wikipedia.org/wiki/Open_Babel

   Open Babel is a free chemical informatics software designed to facilitate the conversion of Chemical file formats and manage molecular data. [3] It serves as a chemical expert system, widely used in fields such as cheminformatics, molecular modelling, and computational chemistry. Open Babel provides both a comprehensive library and command-line ...

6. Spartan (chemistry software) - Wikipedia

   en.wikipedia.org/wiki/Spartan_(chemistry_software)

   Spartan is a molecular modelling and computational chemistry application from Wavefunction. [2] It contains code for molecular mechanics, semi-empirical methods, ab initio models, [3] density functional models, [4] post-Hartree–Fock models, [5] and thermochemical recipes including G3(MP2) [6] and T1. [7]

7. VSEPR theory - Wikipedia

   en.wikipedia.org/wiki/VSEPR_theory

   The bonding electron pair shared in a sigma bond with an adjacent atom lies further from the central atom than a nonbonding (lone) pair of that atom, which is held close to its positively charged nucleus. VSEPR theory therefore views repulsion by the lone pair to be greater than the repulsion by a bonding pair.

8. X-ray crystallography - Wikipedia

   en.wikipedia.org/wiki/X-ray_crystallography

   A powder X-ray diffractometer in motion. X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions.

9. Glossary of chemistry terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_chemistry_terms

   Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...