CHEM101 Lecture Notes - Lecture 1: Absorption Spectroscopy, Quantum Mechanics, Photon

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Rylan Lundgren

Document Summary

Element: simplest type of matter that has unique chemical properties. Are all made up of one type of atom. Molecule: independent structures that are made up of at least one (or more) types of atoms. Compound: occurs when at least two different molecules or elements chemically bond together. Mixture: two or more chemical substances that are physically combined (h2, n2, o2 combine to form air) Chemical reaction: process that leads to a transformation of a chemical substance. (c + o2 = co2 // Chemical change) (producing helium from 6 li and 2 h is a nuclear change) Proton: p+, positively charged +1. 602 x10^-19 c, weighs 1. 673 x10^-24 g which is approx 1 atomic mass unit (amu) Neutron: no charge, 1. 675x10^-24 grams (also approx 1 amu) Electron: e-, negatively charged, 1. 602 x10^-19 c, 9. 109x10^-28 g, 0. 00055 amu. Atomic number: z = the number of protons in an element, defines the element.