Lecture_8_Classification_of_matter

Lecture_8_Classification_of_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 8 Classification of matter GENERAL CHEMISTRY Fall 2009 Updated: 11/22/2011
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2.5 Mixtures and Pure Substances I.  Classification of Matter Two general categories of matter: pure substances and mixtures.  A. Pure substances       Definition: Have uniform composition (cannot be separated by physical means) Pure water is H 2 O; pure Gold (Au) consists of just Gold atoms * Percentage composition always the same from sample to sample * Pure substances melt and boil at a characteristic temperature Two types of pure substances: elements and compounds       1.  Elements   If a pure substance cannot be decomposed into something else, then the substance is an  element . Students should  memorize  the  second twenty  element names and symbols. Element Name Symbol Element Name Symbol Scandium Sc Gallium Ga Titanium Ti Germanium Ge Vanadium V Arsenic As
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This note was uploaded on 11/22/2011 for the course CHEMISTRY CHM1025 taught by Professor Laurachoudry during the Fall '10 term at Broward College.

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Lecture_8_Classification_of_matter - UNIT LECTURE 1 NOTES...

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