Chap3Lec - DRAFT (Chap 3) Page 1 Law of Constant...

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DRAFT (Chap 3) Page 1 Law of Constant Composition (or Law of Definite Proportions) Dalton’s Atomic Theory (early 1800’s) ►Simple substances called elements are composed of indivisible and indestructible particles called atoms. ►Atoms of the same element are identical but differ from those of any other element. Each type of atom has a mass that is different from that of any other type of atom. ►Atoms combine only in whole-number combinations to form molecules. ►Compounds are composed of molecules. All molecules of a compound are identical to each other. ►In chemical reactions atoms are rearranged to produce different substances. The identity of each atom and its mass are unchanged.
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DRAFT (Chap 3) Page 2 Atoms Atomic Mass Unit (amu) Nucleus Subatomic Particles Electron Proton Neutron
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DRAFT (Chap 3) Page 3 Isotopes
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DRAFT (Chap 3) Page 4
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(Chap 3) Page 5 Bohr Atom Quantized energy Each e- has an “address” that consists of four parts (4 quantum numbers) 1. A principle energy level (n)
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This note was uploaded on 11/29/2010 for the course CHEM 101 taught by Professor Stegemiller during the Winter '07 term at Ohio State.

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Chap3Lec - DRAFT (Chap 3) Page 1 Law of Constant...

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