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Chapter 3

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Ch. 4: Atoms and Elements

Ch. 4: Atoms and Elements. Dr. Namphol Sinkaset Chem 152: Introduction to General Chemistry. I. Chapter Outline. Introduction Atomic Theory The Nuclear Atom Elements The Periodic Table Ions Isotopes Atomic Mass. I. Introduction.

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Match the following people with their contributions to atomic theory?

Match the following people with their contributions to atomic theory?. ___1. Law of Conservation of Mass A. Bohr ___2. The discovery of the electron B. Rutheford ___3. Law of Definite Proportions C. Proust ___4. The discovery of the nucleus D. Thomson

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Development of the Atomic Model

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Peggy Au Winston Churchill High School Lethbridge , Alberta, Canada Wednesday, August 1, 2012

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Atomic Theories

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Rosa Parks

Rosa Parks. On Thursday evening December 1, 1955, after a long day of work as a seamstress for a Montgomery, Alabama, department store, Rosa Parks boards a city bus to go home.

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The Evolution of Our Understanding of the Atom (Chapters 4 and 5)

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A GPU I mplementation of Inclusion-based P oints-to A nalysis

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Chapter 4

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Atomic Structure Models

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Models of the Atom in History

Models of the Atom in History. OB: students will review the models of the atom through scientific history, learning how ideas progressed and were dismissed as new information was developed .

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Atoms and the Periodic Table

Atoms and the Periodic Table. The Atom. The atom is the fundamental building block of all stuff, or what scientists like to call " matter ". An individual atom is very small .

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Valence Electrons & Bohr Diagrams

Valence Electrons & Bohr Diagrams. Atomic Structure. Atoms have a nucleus that contains Protons and Neutrons Electrons are contained in shells that surround the nucleus An atom is made of mostly empty space Protons have a positive charge Electrons have a negative charge

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Atomic Models

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How are electrons arranged?

1 st shell. 2 nd shell. 3 rd shell. How are electrons arranged?. Electrons are not evenly spread, but exist in layers called shells. (The shells can also be called energy levels). The arrangement of electrons in these shells is often called the electron configuration.

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The Changing Model of the Atom

The Changing Model of the Atom. J.J. Thomson. Thomson developed the first model of the atom that contained electrons Before Thomson, other models had been developed that only had positive charge Electrons are the subatomic particles with a negative charge.

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Aim: How are subatomic particles arranged within atoms?

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