'Gold foil experiment' diaporamas de présentation

Chapter 10

Chapter 10. Electrons in Atoms. Democritus (400 B.C.). Proposed that matter was composed of tiny indivisible particles Not based on experimental data Greek: atomos. Alchemy (next 2000 years). Mixture of science and mysticism.

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Early Quantum Mechanics

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Atoms and Elements

Atoms and Elements. Goals: Describe atomic structure and define atomic number and mass number. Understand the nature of isotopes and calculate atomic weight from the isotopic masses and abundances. Explain the concept of the mole and use molar mass in calculations.

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Atomic Theory

1803. 1913. 1926. Nucleus. 2s orbital. Atomic Theory. 1904. 2p orbitals. 1s orbital. 3s orbital. 1911. Ancient Greek Theories of Matter.

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Atomic Structure and Periodicity

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Investigating Atoms and Atomic Theory

Investigating Atoms and Atomic Theory Students should be able to: Describe the particle theory of matter. PS.2a Use the Bohr model to differentiate among the three basic particles in the atom (proton, neutron, and electron) and their charges, relative masses, and locations. PS.3

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Investigating Atoms and Atomic Theory

Investigating Atoms and Atomic Theory. Students should be able to: Describe the particle theory of matter. PS.2a Use the Bohr model to differentiate among the three basic particles in the atom (proton, neutron, and electron) and their charges, relative masses, and locations. PS.3

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Atomic Structure

Atomic Structure. Early Theories of Matter. Science as we know it did not exist several thousand years ago Most philosophers thought that matter was made up of air, water, earth, and fire. Democritus (460-370 BC). The first to propose that matter was not infinitely indivisible

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Atomic Theorists

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Ancient Greece

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Atomic Structure

Atomic Structure. www.lab-initio.com. Standards. Modern Atomic Theory. All matter is composed of atoms Atoms cannot be subdivided, created, or destroyed in ordinary chemical reactions . However, these changes CAN occur in nuclear reactions!

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J. J. Thomson Discoverer of the Electron (1897)

J. J. Thomson Discoverer of the Electron (1897).

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Atomic Structure Teaching Resources

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THE HISTORY OF THE ATOM

THE HISTORY OF THE ATOM. Greek Philosophers (400 B.C.). Aristotle- believed the everything was made of the 4 elements (air, fire, water, and land). Each substance contained a varying portion of each element.

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Atomic Theory Class #2

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THE ATOM!

THE ATOM!. BUILDING BLOCKS OF MATTER. Rutherford!. The gold foil experiment Shot alpha particles (helium nuclei) at gold foil. Mass number. 4. 2+. charge. 97% of the time the alpha particle went straight through. 2.7% of the time the alpha particle was deflected.

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History of Atom Flip Book

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Chapter 5: Atomic Structure

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The Development of Atomic Models

The Development of Atomic Models.

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Indirect Measurement

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