Chapter 2 - 9/3 Chapter 2 I. Atoms a. Atomic Theory i. All...

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9/3 Chapter 2 I. Atoms a. Atomic Theory i. All matter is composed of atoms. b. 1 nm = 10 -9 m c. hair = 100 nm = 10 -4 m d. Scanning tunneling microscope used to see atoms II. Make-up of an Atom a. Protons i. 1.00728 amu ii. +1 charge b. Neutrons i. 1.00866 amu ii. 0 charge c. Electrons i. 1.00055 amu ii. -1 charge iii. moving around nucleus III. Nucleus a. Protons and neutrons i. quark b. Inert; very stable IV.Electrons a. Diff. properties/elements bc diff. # electrons V. Periodic Table a. Period i. Row b. Column i. Group - Very similar properties c. Each Box i. Symbol ii. Atomic number 1. # protons 2. # electrons in neutral atom (not ion) iii. Atomic mass (mass number) 1. # protons and neutrons iv. 12 6 C VI.Isotopes a. 13 6 C – one more neutron b. larger mass because extra neutrons VII. Mass Spectrometer a. Separates elemental isotopes (ex. Neon) i. Remove 1 electron from the Ne = Ne + ii. Moves from + to – iii. Applies magnetic field to – charged particle
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1. Isotopes bend to magnetic field at diff. angles
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This note was uploaded on 01/27/2011 for the course CHEM 0310 taught by Professor Brummond during the Fall '08 term at Pittsburgh.

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Chapter 2 - 9/3 Chapter 2 I. Atoms a. Atomic Theory i. All...

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