CHM 109 Lecture Notes - Lecture 1: Nitric Oxide, Scientific Calculator, Aluminium Oxide
Document Summary
Recommended practice questions from the end of the chapter, pp 92+: C&p 6th edition: 1,3,5,7,9,11,17, 21, 23, 29, 43,45, 61,73,91, 103, 109. Learn the element names and symbols found in your text on p 137 plus gold. Au, cesium cs, xenon xe, and radium ra you do not need to know the atomic number: definition of chemistry: it is the study of matter and energy in physical and chemical changes. Chemistry explains how the properties and interactions of atoms and molecules determine what we see at the macroscopic level. 3 measurement and calculation (the topic of our first lab experiment) 120 m has 2 sigs, 12. 00 m has 4 sigs, 120. 1 m has 4 sigs use 1. 20 x 10 2 m to make 120 m have 3 sigs. Sig figs for special cases: counted items do not count toward sig figs.
