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  2. Methylene (compound) - Wikipedia

    en.wikipedia.org/wiki/Methylene_(compound)

    [CH 2] 2• (X̃ 3 B 1) + H 2 O → [CH 3] • + [HO] • [CH 2] (ã 1 A 1) + H 2 O → H 2 CO + H 2 or H 3 COH. The singlet state is also more stereospecific than the triplet. [10] Methylene spontaneously autopolymerises to form various excited oligomers, the simplest of which, is the excited form of the alkene ethylene. The excited oligomers ...

  3. Graphane - Wikipedia

    en.wikipedia.org/wiki/Graphane

    Graphane is a two-dimensional polymer of carbon and hydrogen with the formula unit (CH) n where n is large. [1] Partial hydrogenation results in hydrogenated graphene, which was reported by Elias et al. in 2009 by a TEM study to be "direct evidence for a new graphene-based derivative". The authors viewed the panorama as "a whole range of new ...

  4. List of unsolved problems in chemistry - Wikipedia

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

    This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

  5. Solution (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Solution_(chemistry)

    Making a saline water solution by dissolving table salt in water.The salt is the solute and the water the solvent. In chemistry, a solution is defined by IUPAC as "A liquid or solid phase containing more than one substance, when for convenience one (or more) substance, which is called the solvent, is treated differently from the other substances, which are called solutes.

  6. Wikipedia : Vital articles/Level/5/Physical sciences/Chemistry

    en.wikipedia.org/.../5/Physical_sciences/Chemistry

    This section contains 21 articles. Periodic table () . Block (periodic table) Group (periodic table) Period (periodic table) Atomic mass () . Mass number; Relative atomic mass

  7. Category:Graphemes - Wikipedia

    en.wikipedia.org/wiki/Category:Graphemes

    Typographical symbols (5 C, 75 P) Pages in category "Graphemes" The following 14 pages are in this category, out of 14 total.

  8. Dying To Be Free - The Huffington Post

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

    A yearlong HuffPost investigation into the heroin treatment industry.

  9. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.