Lecture2SHWeb

Lecture2SHWeb - Fri. Sept. 9, 2011 Todays Lecture 2.1 Early...

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1 Fri. Sept. 9, 2011 Today’s Lecture • 2.1 Early History of Chemistry • 2.2 Fundamental Chemical Laws, etc…… • 2.5 Characterizing the Atom Lecture 2
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2 Atoms, Molecules, and Ions (Zumdahl, Chapter 2) • History of Chemistry: – Robert Boyle (1627-1691): First “Chemist” • quantitative behavior of gases • element cannot be broken down into 2 or more simpler substances – Lavoisier (1743-1794): • “mass is neither created nor destroyed” • ________________________ – Proust (1754-1826): • “a given compound always contains exactly the same proportion of elements by mass” • ________________________ – CO 2 always contain 2.66g of O for every g of C
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– Dalton’s Atomic Theory (1808): “marked the beginning of Modern Chemistry” 1 -Each element is made up of tiny particles called atoms 2 -The atoms in an element are identical 3 -Chemical compounds are formed when atoms of different elements combine with each other. 4 -Chemical reactions involve reorganization of the atoms
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Lecture2SHWeb - Fri. Sept. 9, 2011 Todays Lecture 2.1 Early...

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