CH-1010 Chapter Notes - Chapter 2: Formula Unit, Weighted Arithmetic Mean, Strong Interaction

• School: Clemson University
• Department: Chemistry
• Course: CH-1010
• Professor: Mycia Cox

Document Summary

Subatomic particles: the neutrons, protons, and electrons in an atom. Cathode rays: streams of electrons emitted by the cathode in a partially evacuated tube. Electron: a subatomic particle that has a relative charge of 1- and essentially zero mass. Ion: an atom or molecule that has a positive or negative charge. Radioactivity: the spontaneous emission of high-energy radiation and particles by materials. Beta ( particle: a radioactive emission that is a high-energy electron. Alpha () particle: a radioactive emission with a charge of 2+ and a mass equivalent to that of a helium nucleus. Nucleus: (of an atom) the positively charged center of an atom that contains nearly all the atom"s mass. Proton: a subatomic particle, present in the nucleus of an atom that has a relative charge of 1+ and a mass number of 1. Neutron: an electrically neutral (uncharged) subatomic particle with a mass number of 1.