This chemistry video tutorial explains how to calculate the number of protons, neutrons, and electrons in an atom or in an ion. It also explains the difference between atomic number, mass number, and the average atomic mass for the isotopes of the elements in the periodic table. This tutorial contains plenty of examples and practice problems. Full-Length Math & Science Videos: https://www.patreon.com/mathsciencetutor/collections ___________________________________ Chemistry - Basic Introduction: https://www.youtube.com/watch?v=-KfG8kH-r3Y Significant Figures Review: https://www.youtube.com/watch?v=l2yuDvwYq5g Unit Conversion Problems: https://www.youtube.com/watch?v=eK8gXP3pImU Pure Substances & Mixtures: https://www.youtube.com/watch?v=OHhnm2p5G3o Physical and Chemical Changes: https://www.youtube.com/watch?v=YE2xaMsoGFU _________________________________ Atoms - Basic Introduction: https://www.youtube.com/watch?v=acdkMeEKCNQ Cations and Anions Explained: https://www.youtube.com/watch?v=aAV2DMAI5f8 Diatomic Elements & Molecules: https://www.youtube.com/watch?v=gi337Mx7wTc Elements, Atoms, & Molecules: https://www.youtube.com/watch?v=pSJeMJaCkVU Protons, Neutrons, & Electrons: https://www.youtube.com/watch?v=65dDZulPhtg __________________________________ Average Atomic Mass: https://www.youtube.com/watch?v=JT18bDAadQ0 What Are Isotopes? https://www.youtube.com/watch?v=bagegEZBtOs Percent Abundance of Isotopes: https://www.youtube.com/watch?v=w-WhwWNC8-Q Ionic and Covalent Bonding: https://www.youtube.com/watch?v=uDFLHTDJ4XA Naming Molecular Compounds: https://www.youtube.com/watch?v=3agUL7-ezXk Writing Formulas - Ionic Compounds: https://www.youtube.com/watch?v=GJ4Mds0CWLE __________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/