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Lecture_7_Introduction_to_matter - UNIT LECTURE 1 NOTES...

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U N I T 1 L E C T U R E N O T E S LECTURE 7 Introduction to matter (2.1 – 2.4) GENERAL CHEMISTRY Fall 2009 Updated: 11/22/2011
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2.1 The Particulate Nature of Matter 1. Matter     a. Definition  i. 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”  (extremely small) level. 2. Atoms a. All matter consists of tiny particles called atoms (p. 22). 2.2 Elements and Compounds 1. Elements       a. contain only one kind of atom b. atoms with the same number of protons c. do not decompose into other elements d. properties do not vary Students should  memorize  the  first twenty  element names and symbols. H appy He nry, the Li ttle Be ach B oy, C aN  dO  F iNe Na ughty M eg an, the Al pine Si ster, P retends to S ki at ClArK  Ca nyon Element Name Symbol Element Name Symbol Hydrogen H Sodium Na Helium He Magnesium Mg Lithium Li Aluminum Al
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