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The Periodic Table of Videos has filmed at least one video for each of the 118 elements (from hydrogen to oganesson). [13] They have also filmed several videos that discuss molecules such as D 2 O (heavy water) [14] and sulfuric acid. [15] Also filmed are "Chem definitions" that provide an explanation to words that are used in chemistry.
Paper 2 – free response questions on the SSC (32% at SL, 36% at HL) Paper 3 – free response questions on the options (24% at SL, 20% at HL) At the Standard Level, the examinations are respectively 45 minutes, 1 hour and 15 minutes, and 1 hour long. At the Higher Level, they are 1 hour, 2 hours and 15 minutes, and 1 hour and 15 minutes long.
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.
Natural carbon is a mixture of 12 C (about 98.9%), 13 C (about 1.1%) and about 1 atom per trillion of 14 C. Most (54 of 94) naturally occurring elements have more than one stable isotope. Except for the isotopes of hydrogen (which differ greatly from each other in relative mass—enough to cause chemical effects), the isotopes of a given ...
In 1888, the title was changed to Zeitschrift für Angewandte Chemie (Journal of Applied Chemistry), and volume numbering started over. This title was kept until the end of 1941 when it was changed to Die Chemie. Until 1920, the journal was published by Springer Verlag and by Verlag Chemie starting in 1921.
[1] [7] [16] Using an improved version of this slide trough, American chemist Irving Langmuir made additional discoveries on the properties of surface molecules, which earned him a Nobel Prize in chemistry in 1932. [17] Pockels' device is a direct antecedent of the Langmuir–Blodgett trough, developed later by Langmuir and physicist Katharine ...
Video papers are a recent addition to practice of scientific publications. They most often combine an online video demonstration of a new technique or protocol with a rigorous textual description. [22] [23] The formats of journal articles vary, but many follow the general IMRAD scheme recommended by the International Committee of Medical ...
Kroto's 1985 paper entitled "C60: Buckminsterfullerene", published with colleagues J. R. Heath, S. C. O'Brien, R. F. Curl, and R. E. Smalley, was honored by a Citation for Chemical Breakthrough Award from the Division of History of Chemistry of the American Chemical Society, presented to Rice University in 2015.