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  2. Free High School Science Texts - Wikipedia

    en.wikipedia.org/wiki/Free_High_School_Science_Texts

    The Free High School Science Texts (FHSST) organization is a South African non-profit project, which creates open textbooks on scientific subjects. Textbooks are edited to follow the government's syllabus, and published under a Creative Commons license (CC BY [1]), allowing teachers and students to print them or share them digitally.

  3. List of important publications in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_important...

    Description: This book explained Dalton's theory of atoms and its applications to chemistry. Importance: The book was one of the first to describe a modern atomic theory, a theory that lies at the basis of modern chemistry. [3]: 251 It is the first to introduce a table of atomic and molecular weights.

  4. Femtochemistry - Wikipedia

    en.wikipedia.org/wiki/Femtochemistry

    Femtochemistry is the area of physical chemistry that studies chemical reactions on extremely short timescales (approximately 10 −15 seconds or one femtosecond, hence the name) in order to study the very act of atoms within molecules (reactants) rearranging themselves to form new molecules (products).

  5. Template:List of oxidation states of the elements - Wikipedia

    en.wikipedia.org/wiki/Template:List_of_oxidation...

    Download as PDF; Printable version; In other projects ... [11] [10 ] 6 carbon: C −4: −3 ... dk dl dm dn do dp dq dr ds dt du dv dw dx dy dz ea eb ec ed ee ef eg ...

  6. Eleventh grade - Wikipedia

    en.wikipedia.org/wiki/Eleventh_grade

    In India, the 11th Grade is the first year of higher secondary education and is often considered the third year of high school (Higher/Senior Secondary School or Senior High School). It is commonly known as "Class 11" or "Plus 1" (derived from "10+1") and, in some states, as the first year of Junior College (Intermediate or Pre-University Course).

  7. Femtosecond - Wikipedia

    en.wikipedia.org/wiki/Femtosecond

    The first to make femtosecond measurements was the Egyptian Nobel Laureate Ahmed Zewail, for which he was awarded the Nobel Prize in Chemistry in 1999. Professor Zewail used lasers to measure the movement of particles at the femtosecond scale, thereby allowing chemical reactions to be observed for the first time.

  8. X-ray absorption fine structure - Wikipedia

    en.wikipedia.org/wiki/X-ray_absorption_fine...

    The XANES energy region [3] extends between the edge region and the EXAFS region over a 50-100 eV energy range around the core level x-ray absorption threshold. Before 1980 the XANES region was wrongly assigned to different final states: a) unoccupied total density of states, or b) unoccupied molecular orbitals (kossel structure) or c) unoccupied atomic orbitals or d) low energy EXAFS ...

  9. Diethylbenzenes - Wikipedia

    en.wikipedia.org/wiki/Diethylbenzenes

    Diethylbenzenes arise as side-products of the alkylation of benzene with ethylene, which can be described as two steps. The first step is the industrial route to ethylbenzene, which is produced on a large scale as a precursor to styrene.