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  2. 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.

  3. Twelfth grade - Wikipedia

    en.wikipedia.org/wiki/Twelfth_grade

    Twelfth grade (also known as 12th grade, grade 12, senior year, or class 12) is the twelfth and final year of formal or compulsory education. It is typically the final year of secondary school and K–12 in most parts of the world. Students in twelfth grade are usually 17–18 years old. Some countries have a thirteenth grade, while other ...

  4. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  5. Sandmeyer reaction - Wikipedia

    en.wikipedia.org/wiki/Sandmeyer_reaction

    RXNO:0000021. The Sandmeyer reaction is a chemical reaction used to synthesize aryl halides from aryl diazonium salts using copper salts as reagents or catalysts. [1][2][3][4] It is an example of a radical-nucleophilic aromatic substitution. The Sandmeyer reaction provides a method through which one can perform unique transformations on benzene ...

  6. Graduate Aptitude Test in Engineering - Wikipedia

    en.wikipedia.org/wiki/Graduate_Aptitude_Test_in...

    The Graduate Aptitude Test in Engineering (GATE) is an entrance examination conducted in India that tests the undergraduate subjects of engineering and sciences for admission to technical postgraduate programs. GATE is conducted jointly by the Indian Institute of Science and seven Indian Institutes of Technologies at Roorkee, Delhi, Guwahati ...

  7. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    Category. v. t. e. Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1] Study of structure determines their structural formula.

  8. Chemistry education - Wikipedia

    en.wikipedia.org/wiki/Chemistry_education

    Chemistry education (or chemical education) is the study of teaching and learning chemistry. It is one subset of STEM education or discipline-based education research (DBER). [1] Topics in chemistry education include understanding how students learn chemistry and determining the most efficient methods to teach chemistry.

  9. Joint Entrance Examination – Advanced - Wikipedia

    en.wikipedia.org/wiki/Joint_Entrance_Examination...

    A candidate should have appeared for the Class XII (or equivalent) examination for the first time in either 2023 or 2024 with Physics, Chemistry, and Mathematics as compulsory subjects with a minimum of 75% aggregate marks or in the top 20 percentile in their 10+2 Board Examination conducted by their respective board for General,EWS and OBC ...