???? TOPICS COVERED IN CLASS ???? ↪ Introduction 00:00 ↪ 00:50 Review of numerical relationships in atoms (how to find the number of protons, neutrons, electrons in atoms and ions, mass number and atomic number); ↪ 02:55 Review of isotopes (atoms that have the same number of protons and are of the same chemical element), isobars (atoms that have the same mass number in common), isotones (atoms that have the same number of neutrons in common) and isoelectronics (atoms and/or ions that have the same number of electrons in common); ↪ 05:44 The History of Radioactivity (a guide for students) ↪ 07:07 The experiment carried out by Rutherford that allowed the identification and observation of characteristics of alpha particles (they had a positive charge, since they deflected towards the negative electric field, and are those that had the greatest mass), beta particles (they had a negative charge, since they deflected towards the positive electric field, and are those that had the least mass than alpha particles) and gamma radiation (they did not undergo any type of deflection, which we can conclude that they had no charge, in addition, gamma radiation was not made up of particles, resembling x-rays, since it would be formed by electromagnetic waves); ↪ 14:33 The first law of radioactivity (Soddy's Law), where a nucleus, when emitting an alpha particle, will have its mass number reduced by 4 units, and its atomic number will be reduced by 2 units. In this topic of the class I demonstrate examples of equations with the first Law of Radioactivity; ↪ 22:09 The second law of radioactivity (Soddy-Fajans-Russel Law), where a nucleus when emitting a beta particle, will not have its mass number changed, but its atomic number will increase by 1 unit. In this topic of the class I demonstrate examples of equations with the Second Law of Radioactivity; ↪ 31:23 How can the Laws of Radioactivity be charged by entrance exams? ↪ 41:40 Natural Radioactive Family (or series): sequence that occurs spontaneously in nature, in which radioactive elements transform into a more stable chemical element; ↪ 47:36 Artificial transmutation reactions; nuclear equation involving the proton, neutron, positron and deuterium; ↪ 01:08:26 Nuclear Fission (breaking of a large nucleus into smaller nuclei + how the reactions of the uranium-235 atomic bomb work) vs Nuclear Fusion (two smaller nuclei fuse into another larger nucleus + reactions of the sun + hydrogen bomb) ???? SUPPORT OUR CHANNEL ???? for only R$ 2.99/month. Access the link, and learn more about the benefits: / marcelão da química ❶ Want to understand how this extensive course works? Click on the link: (wait for update) ❷ Want to access the playlist that contains all the classes of this course? Click on the link: https://goo.gl/iph9YB ???? Link to the Sites I mentioned in class ???? UERJ Periodic Table https://drive.google.com/file/d/18jye... HISTORY OF RADIOACTIVITY (web series that I recorded for another channel): • M08. Radioactivity Characteristic of Alpha, Beta and Gamma: http://mundoeducacao.bol.uol.com.br/q... Atomic bomb explosion: • Nuclear bomb exploding from under the ... INSTAGRAM: / marcelaodaquimica ☑ Want to access the exercises? Click on this link: https://drive.google.com/file/d/1GPvC... ☑ Download my FREE Chemistry textbook: • 50 BUCKETS OF URINE AND ORGANIC COMPOUNDS... ☑ Want to access the answer key? Click on this link: https://drive.google.com/file/d/1J8Tu... [BIBLIOGRAPHY] Books that Marcelão usually uses to formulate his YouTube classes (not necessarily this class you're watching, okay?) Feltre, Ricardo. Chemistry (3 volumes). 7th Edition. São Paulo: Moderna, 2008 Ciscato & Pereira. Planeta Química (3 volumes). 1st Edition. São Paulo: Ática, 2010 Reis, Martha. Chemistry (Volume II). São Paulo: FTD, 2007 Reis, Martha. Chemistry (3 volumes). 1st Edition. São Paulo: Ática, 2013 Usberco & Salvador. Chemistry (Single Volume). 5th Edition. São Paulo: Saraiva, 2002 Martino, Arilson. Chemistry the Global Science (7 volumes). 2nd Edition. Goiânia: Editora W, 2016 Atkins & Jones. Principles of Chemistry (Single Volume). 5th Edition. Porto Alegre: Bookman, 2012 Kotz & Treichel. Chemistry and Chemical Reactions (2 volumes). 4th Edition. Rio de Janeiro: LTC, 2002 Bruice, Paula Y. Fundamentals of Organic Chemistry (Single Volume). 2nd Edition. São Paulo: Pearson Education do Brasil, 2014 Share our work with your friends ????