Chemists always distinguish between the macroscopic and microscopic level. What does that mean? In the experiment zinc reacts with sulphur, this level is attempted to be demonstrated. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done by the alugha AI.
In the mid-19th century, the nature of the elements was still largely unknown. In 1869, Russian chemist Dimitri Mendeleev develops the periodic table, which is still valid today with slight adjustments. Authors: ZDF/Terra X/T. Schrader/J. Koester/F. Steinhardt/Caligari/Moods in Pictures/Maximilian
Learn the basics about Avogadro's number - The Mole. What is Avogrado's number? Why is it called like that and what relation does it have to the mole? Find more in this video! This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation
Learn about the education of chemist Percy Julian. Julian's early educational years paralleled an educational movement that prepared African Americans for industrial jobs, the growing white supremacist movement, and the rise of the Ku Klux Klan. Julian would eventually move north, and finally to Eur
Learn the basics about the principle of green chemistry that considers reducing derivatives, as a part of environmental chemistry. Functional groups are the sites in a molecule where a reaction occurs. Some molecules may have more than one functional group which may be a problem if you’re carrying
Learn the basics about what designer polymers are, some examples of them, and how chemical properties are used to perform a particular function. Polymers have been around for a long time. Some of the commonly named examples are found in clothes, things like nylon, polyesters and acrylic. Others ar
Today, medicine is seen as an authority and a sacred institution. But like any institution, it has a dark past. The story of Dr. Ignaz Semmelweis shows how medicine was terribly wrong and how the poor judgment of the doctors cost many women their lives. In 19th-century Vienna, the young doctor was r
