Chemistry_1031_day5_013009_actual

Chemistry_1031_day5_013009_actual - General Chemistry I...

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General Chemistry I CHE-1031 Dr. Jonathan M. Smith Friday, January 30
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Today 2.8 – 2.9 Atomic Mass, The Mole, Molar Mass Re-read Ch. 2 Online exam: Mastering Chemistry
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Recent chemistry research report…
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A omic Theory Chapter 2
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5 . . . Nuclear Atom Plum Pudding Atom if atom was like a plum pudding, all the α particles should go straight through most α particles go straight through some α particles go through, but are deflected a few of the α particles do not go through
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Atomic number (Z) = number of protons in nucleus Mass number (A) = number of protons + number of neutrons = atomic number (Z) + number of neutrons Isotopes are atoms of the same element (X) with different numbers of neutrons in their nuclei X A Z H 1 1 H (D) 2 1 H (T) 3 1 U 235 92 U 238 92 Mass Number Atomic Number Element Symbol 2.3 Atomic number, Mass number and Isotopes
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7 Atomic Structures of Ions Metals form cations For each positive charge, the ion has 1 less
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This note was uploaded on 05/09/2010 for the course CHEM 1031 taught by Professor Thomas during the Spring '06 term at Temple.

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Chemistry_1031_day5_013009_actual - General Chemistry I...

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