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Lecture7_Classification_of_matter - LECTURE NOTES LECTURE 7...

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L E C T U R E N O T E S LECTURE 7 Classification of matter GENERAL CHEMISTRY Fall 2008 Updated: 11/22/2011
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I.  Matter   A. Definition  Matter takes up  space  (volume) and has  mass . Matter is loosely defined in order  to provide room for explaining matter’s behavior at the quantum level. B.  States of matter   Described macroscopic and microscopic views 1. Macroscopic Solid Liquid Gas Shape Fixed Of container No Volume Fixed Fixed No [Image from http://www.grc.nasa.gov/WWW/K-12/airplane/state.html] 2. Microscopic Particles in a:  Gases are well separated with no regular arrangement.  Liquids are close together with no regular arrangement.  Solids are tightly packed, usually in a regular pattern Particles in a:  Gases vibrate and move freely at high speeds.  Liquids vibrate, move about, and slide past each other.  Solids vibrate (jiggle) but generally do not move from place to place. 
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