CH 104 Lecture Notes - Lecture 1: Significant Figures, Scientific Notation, Gnu Compiler Collection
Document Summary
Chapters 1-3 homework due september 12 on connect. Chapters 1-3 test on september 13 6:30 pm (34 exam questions, 11 questions per chapter, extra question on balloons) Blackboard collaborate tonight- recitation problem working at 6:30 pm (open at 6:00) Can check test practice answers against key during office hours. Observations hypothesis experiments theory definite volume definite shape particles in order definite volume no definite shape particles close but can move around no definite volume no definite shape particles far apart and move randomly. A physical change alters the material without altering composition solid water melting liquid water boiling. A chemical change alters the material by altering the composition. It is the conversion of one hydrogen balloons reacting to oxygen in the air produces water. An exact number results from counting objects or is part of a definition. An inexact number results from a measurement or observation and contains some uncertainty.
