Atomic Theory & Atomic Structure | 2.1 General Chemistry

Atomic Theory and Structure Chad covers the basics of atomic theory and structure of matter in this lesson. He covers the important contributions to atomic theory and structure by four chemistry stalwarts: John Dalton, the father of atomic theory JJ Thompson discovered the electron Robert Millikan's oil drop experiment in which he discovered the charge and mass of an electron Ernest Rutherford used gold foil and alpha particles to discover the nucleus Next, isotope symbols and isotope notation are explained and Chad shows how to determine the number of protons, neutrons, and electrons. The atomic number is equal to the number of protons, and the difference between the mass number and the atomic number is equal to the number of neutrons. Finally, the charge can then be used to find the number of electrons. Chad also explains and works an example of how to use isotope masses and relative abundances to calculate an element's atomic weight (aka atomic mass). Introduction to the Periodic Table of the Elements Finally, the lesson is concluded with an introduction to the Periodic Table of the Elements. Chad identifies groups and periods and their significance. He shows how to identify metals, nonmetals, and metalloids and identifies 4 of the groups: the Alkali Metals, Alkaline Earth Metals, Halogens, and Noble Gases. I've embedded this playlist as a course on my website with all the lessons organized by chapter in a collapsible menu and much of the content from the study guide included on the page. Check this lesson out at https://www.chadsprep.com/chads-gener... If you want all my study guides, quizzes, final exam reviews, and practice exams, check out my premium course at https://www.chadsprep.com/genchem-you... 00:00 Lesson Introduction 00:55 Atomic Theory and Structure 09:51 Isotope Notation 14:24 How to Calculate Atomic Weight (i.e. Atomic Mass) 22:28 Introduction to the Periodic Table of the Elements https://www.chadsprep.com/ #generalchemistry #chemistrytutorial #atomicstructure