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  2. List of Cambridge International Examinations Ordinary Level ...

    en.wikipedia.org/wiki/List_of_Cambridge...

    Chemistry (with Coursework) (Singapore) Yes Yes No Singapore only; available from 2014; Coursework to be phased out from 2018 (to replace one-time practical assessment) syllabus: CIE 5074 Chemistry (Singapore) Yes Yes Exclusive Singapore only; available from 2014; last exam in 2017 CIE 5076 Science (Physics, Chemistry) (Singapore) Yes Yes Yes

  3. International General Certificate of Secondary Education

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

    Most IGCSE subjects offer a choice of tiered examinations: Core or Extended papers (in Cambridge International), and Foundation or Higher papers (in Edexcel). This is designed to make IGCSE suitable for students with varying levels of ability. In some subjects, IGCSE can be taken with or without coursework.

  4. Bleaching of wood pulp - Wikipedia

    en.wikipedia.org/wiki/Bleaching_of_wood_pulp

    Writing and printer paper would typically be as bright as 104 ISO. While the results are the same, the processes and fundamental chemistry involved in bleaching chemical pulps (like kraft or sulfite ) are very different from those involved in bleaching mechanical pulps (like stoneground, thermomechanical or chemo-thermomechanical).

  5. GCE Ordinary Level - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level

    In Brunei, the O-Level qualification is offered, with examinations conducted by Cambridge Assessment International Examinations (CAIE).. A number of subjects: English Language, English Literature, Bahasa Melayu (Malay language), Malay Literature, Islamic Religious Knowledge, Ulum al-Quran, Hafaz al-Quran, Tafsir al-Quran (Asas), History, Geography, Pure sciences (Physics, Chemistry and Biology ...

  6. 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.

  7. Metallic bonding - Wikipedia

    en.wikipedia.org/wiki/Metallic_bonding

    The freedom of electrons to migrate also gives metal atoms, or layers of them, the capacity to slide past each other. Locally, bonds can easily be broken and replaced by new ones after a deformation. This process does not affect the communal metallic bonding very much, which gives rise to metals' characteristic malleability and ductility. This ...

  8. Collision theory - Wikipedia

    en.wikipedia.org/wiki/Collision_theory

    Collision theory is a principle of chemistry used to predict the rates of chemical reactions. It states that when suitable particles of the reactant hit each other with the correct orientation, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful collisions.

  9. Column chromatography - Wikipedia

    en.wikipedia.org/wiki/Column_chromatography

    Column chromatography in chemistry is a chromatography method used to isolate a single chemical compound from a mixture. Chromatography is able to separate substances based on differential absorption of compounds to the adsorbent; compounds move through the column at different rates, allowing them to be separated into fractions.