https://padlet.com/paooregar/odk0j03vzs712lmp en-us 2023-02-20 23:39:05 UTC 2023-02-22 05:51:23 UTC hello@padlet.com https://padlet.net/icons/png/1f9ea.png isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489198967 Paracelsus was the first to connect goitre with minerals, especially lead, in drinking water. He prepared and used new chemical remedies, including those containing mercury, sulfur, iron, and copper sulfate, thus uniting medicine with chemistry, as the first London Pharmacopoeia, in 1618, indicates.]]> 2023-02-21 04:39:09 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489198967 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199147 He established the law of conservation of mass, determined that combustion and respiration are caused by chemical reactions with what he named “oxygen,” and helped systematize chemical nomenclature, among many other accomplishments.]]> 2023-02-21 04:39:26 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199147 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199271 A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.]]> 2023-02-21 04:39:39 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199271 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199318 J. J. Thomson was a British scientist that discovered the electrons and created an atomic model in 1904 where the atoms are positive spheres that have negative charge electrons embedded.]]> 2023-02-21 04:39:44 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199318 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199755 Niels Henrik David Bohr was born on October 7th, 1885. He was a Danish physicist that made the Bohr Model in 1913. This model had a solar system-like form with electrons orbiting a positively charged atomic nucleus.]]> 2023-02-21 04:40:24 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199755 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199821 Dimitri Mendeleev, a Russian chemist, and inventor born on February 8th, 1834, created the modern periodic table in 1869.]]> 2023-02-21 04:40:31 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489199821 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489200840 Rosalind Franklin was a british chemist who in 1953 discovered the molecular structure of DNA. ]]> 2023-02-21 04:42:07 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489200840 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489202429 Ernest Rutherford was a New Zealand physicist born on August 30th, 1871. One of his major contributions was that he formulated the Rutherford model of the atom in 1911.]]> 2023-02-21 04:44:28 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489202429 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489203411 Known for his law of gases, Boyle was a 17th-century pioneer of modern chemistry. Every general-chemistry student learns of Robert Boyle (1627–1691) as the person who discovered that the volume of a gas decreases with increasing pressure and vice versa—the famous Boyle's law.]]> 2023-02-21 04:45:58 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489203411 paooregar https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489265274 2023-02-21 06:00:45 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489265274 paooregar https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489280532 2023-02-21 06:17:02 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489280532 paooregar https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489281059 2023-02-21 06:17:49 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2489281059 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490612040 Pioneering research on radioactivity]]> 2023-02-22 04:13:09 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490612040 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490613616 2023-02-22 04:15:30 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490613616 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490614134 Discovered polonium and radium]]> 2023-02-22 04:16:13 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490614134 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490618319 Successfully isolated radioactive radium salts from the mineral pitchblende in their laboratory in Paris]]> 2023-02-22 04:21:54 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490618319 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490620181 2023-02-22 04:24:17 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490620181 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490623468 Pierre discovered the piezoelectric effect with his brother, Jacques]]> 2023-02-22 04:28:36 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490623468 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490623844 Discovered polonium and radium]]> 2023-02-22 04:29:07 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490623844 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490624813 Successfully isolated radioactive radium salts from the mineral pitchblende in their laboratory in Paris]]> 2023-02-22 04:30:19 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490624813 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490626425 2023-02-22 04:32:36 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490626425 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490627705 Mathematically proved the existence of atoms, and thus helped revolutionize all the sciences through the use of statistics and probability.]]> 2023-02-22 04:34:33 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490627705 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490629607 Proposed and explained the theories of special relativity (1905) and general relativity(1915)]]> 2023-02-22 04:37:27 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490629607 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490630469 Best known to the public for championing the use of vitamin C for health purposes and for winning the Nobel Peace Prize, Linus Carl Pauling (1901–1994) was revered by his fellow scientists as a prolific researcher who made significant contributions to our understanding of chemical bonding and chemical structure. ]]> 2023-02-22 04:38:44 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490630469 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490631710 He pioneered the study of molecular asymmetry; discovered that microorganisms cause fermentation and disease; originated the process of pasteurization; saved the beer, wine, and silk industries in France; and developed vaccines against anthrax and rabies.]]> 2023-02-22 04:40:36 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490631710 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490631816 Alfred Nobel focused on the development of explosives technology as well as other chemical inventions, including such materials as synthetic rubber and leather, artificial silk, etc. By the time of his death in 1896 he had 355 patents.]]> 2023-02-22 04:40:46 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490631816 https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490670781 He established the modern periodic table. He organized it based on the atomic weight of each of the elements.]]> 2023-02-22 05:31:51 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490670781 isagrogzz https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490675453 2023-02-22 05:38:20 UTC https://padlet.com/paooregar/odk0j03vzs712lmp/wish/2490675453