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  2. Paper chemicals - Wikipedia

    en.wikipedia.org/wiki/Paper_chemicals

    Paper Coating 1) The paper or board 2) The first layer of coating to even out the surface 3) A second layer for an even smoother and whiter surface. Pigments that absorb in the yellow and red part of the visible spectrum can be added. As the dye absorbs light, the brightness of the paper will decrease, unlike the effect of an optical ...

  3. Surface chemistry of paper - Wikipedia

    en.wikipedia.org/wiki/Surface_chemistry_of_paper

    Printing quality is highly influenced by the various treatments and methods used in creating paper and enhancing the paper surface. Consumers are most concerned with the paper-ink interactions which vary for certain types of paper due to different chemical properties of the surface. [8] Inkjet paper is the most commercially used type of paper.

  4. IB Group 4 subjects - Wikipedia

    en.wikipedia.org/wiki/IB_Group_4_subjects

    Paper 1 (45 raw marks contributing 30% of the course, 1 hour) consists of short-answer and data-based questions. Paper 2 (65 raw marks contributing 50% of the course, 2 hours) consists of: Section A: Candidates are required to analyse and make reasoned and balanced judgements relating to a range of data on a specific unseen case study.

  5. Paper - Wikipedia

    en.wikipedia.org/wiki/Paper

    Download as PDF; Printable version; ... (g/m 2 or usually gsm) of the paper. Printing paper is generally between 60 gsm and 120 gsm. ... Chemistry and Chemical ...

  6. Outline of chemistry - Wikipedia

    en.wikipedia.org/wiki/Outline_of_chemistry

    The following outline acts as an overview of and topical guide to chemistry: . Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions.

  7. Wikipedia : Manual of Style/Chemistry/Structure drawing

    en.wikipedia.org/.../Chemistry/Structure_drawing

    Indexes used for labelling must be superscripted: R 1-CH 2-R 2 (not R 1-CH 2-R 2) Do not include English text in images: this prevents their reuse in other languages. Methyl groups should be denoted with “CH 3 ”, not “Me”, unless they are bound to a heteroatom (for example, “NMe 2 ”).

  8. Physical chemistry - Wikipedia

    en.wikipedia.org/wiki/Physical_chemistry

    This paper introduced several of the cornerstones of physical chemistry, such as Gibbs energy, chemical potentials, and Gibbs' phase rule. [10] The first scientific journal specifically in the field of physical chemistry was the German journal, Zeitschrift für Physikalische Chemie, founded in 1887 by Wilhelm Ostwald and Jacobus Henricus van 't ...

  9. List of important publications in chemistry - Wikipedia

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

    This is a list of important publications in chemistry, organized by field. [1] [2] [3] [4]Some factors that correlate with publication notability include: Topic creator – A publication that created a new topic.