Lecture6 - Chem 1P Lecture 6: Atoms Chang Section 2.1...

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Chem 1P Lecture 6: Atoms
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Particles In our experience, matter seems to be composed of particles. plastic balls playland, McDonald’s SARS virus lab of Prof. J. Collins, U. of AZ Si surface lab of Prof. W. Ho, UCI Chang Section 2.1
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Atomic Theory Chang Section 2.1 Democritus (c. 460 BC – c. 370 BC) Matter and space are not infinitely divisible. Artistotle (384 BC – 322 BC) Mwha… John Dalton (1766–1844) I think Mr. Democritus is right.
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Dalton’s Laws Chang Section 2.1 1. Elements are composed of extremely small particles called atoms 2. All elements of a given element are identical, having the same size, mass and chemical properties. 3a. Compounds are composed of more than one element.
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Dalton’s Laws Chang Section 2.1 3b. In any compound the number of atoms of any two of the elements present is either an integer of a simple fraction. 4. A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction carbon monoxide carbon dioxide
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Elementary particles Chang Section 2.2 electron e- Charge: -1.6022 x 10 -19 C Mass: 9.10938 x 10 -28 g
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This note was uploaded on 11/23/2010 for the course CHEM Chem 1P taught by Professor Ericpotma during the Winter '10 term at UC Irvine.

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Lecture6 - Chem 1P Lecture 6: Atoms Chang Section 2.1...

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