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  2. Basic State Exam (Russia) - Wikipedia

    en.wikipedia.org/wiki/Basic_State_Exam_(Russia)

    On 27 May 2024, ninth-grade students in Nizhny Novgorod were unable to take the Basic State Exam (OGE) due to a technical failure in the software system. The exams in informatics, biology, chemistry, physics, and social studies were rescheduled for a backup day, and students had to stand outside for over three hours. [17]

  3. Category:Chemistry classroom experiments - Wikipedia

    en.wikipedia.org/wiki/Category:Chemistry...

    This category is devoted to simple classroom experiments as part of Chemistry education. Pages in category "Chemistry classroom experiments" The following 25 pages are in this category, out of 25 total.

  4. Science, technology, society and environment education

    en.wikipedia.org/wiki/Science,_technology...

    The project Science and the city, for example, took place during the school years 2006-2007 and 2007-2008 involving an intergenerational group of researchers: 36 elementary students (grades 6, 7 & 8) working with their teachers, 6 university-based researchers, parents and community members.

  5. Category:Chemistry experiments - Wikipedia

    en.wikipedia.org/wiki/Category:Chemistry_experiments

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  6. The Golden Book of Chemistry Experiments - Wikipedia

    en.wikipedia.org/wiki/The_Golden_Book_of...

    The book was also believed to be a source of inspiration to David Hahn, nicknamed "the Radioactive Boy Scout" by the media, who attempted to construct a nuclear reactor in his mother's shed, [2] although the book does not include any nuclear reactions. Due to safety concerns, the book was eventually pulled from library shelves. [3]

  7. CK-12 Foundation - Wikipedia

    en.wikipedia.org/wiki/CK-12_Foundation

    CK-12 was established in 2007 by Neeru Khosla and Murugan Pal as a not-for-profit educational organization. [5] Teacher-generated content was initially made available under Creative Commons Attribution licenses so as to make it simpler, easier, and more affordable for children to access educational resources.

  8. Blue bottle experiment - Wikipedia

    en.wikipedia.org/wiki/Blue_bottle_experiment

    The vanishing valentine experiment is another chemical reaction related to the blue bottle experiment. This reaction occurs when water, glucose, sodium hydroxide, and resazurin is mixed in a flask. When the solution is shaken, it turns from light blue to a reddish color. The solution turns back to a light blue after being left to stand for a while.

  9. 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.