'James chadwick' diaporamas de présentation

reintroduction to Chemistry

reintroduction to Chemistry. Matter: Anything that has mass and volume. States of Matter. Physical Changes. Boiling point Melting point Freezing point Color Density. Properties that do not change the chemical nature of matter.

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Elements and Periodic Table

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Chapter 4

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Chapter 5 Electrons in Atoms

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Quanta to Quarks

Quanta to Quarks. Focus Area 3. The Nucleus. T ypically the nucleus is less than one ten-thousandth the size of the atom, the nucleus contains more that 99.9% of the mass of the atom.

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Chpt. 2: The Atom

Chpt. 2: The Atom. History of the Atom Greek Philosophers (400BC): - first proposed that matter was composed of minute particles - believed that the tiny particles of which all matter was composed were so small that nothing smaller was possible

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The History of the Atom

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Atomic Structure

Atomic Structure. What are the 3 major parts of an atom?. What are the 3 major parts of an atom?. Proton Neutron Electron. Draw a diagram showing the location of each part of the atom. Draw a diagram showing the location of each part of the atom.

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

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

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Historical Figures In Chemistry

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Atoms: The Greek Idea

~ 450 B.C.E., Leucippus and Democritus Atomos : Point at which matter can no longer be subdivided. Atoms: The Greek Idea. ~384 B.C.E., Aristotle: All matter is composed of 4 elements, and all matter is continuous, not atomistic. Atoms: The Greek Idea. THE ATOM.

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THE ATOM

THE ATOM. Around 400 B.C. a Greek philosopher, Democritus , proposed that all forms of matter were divisible into extremely small fundamental particles called atomos . (Greek for indivisible)

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Bellringer

Bellringer. COMPLETE SENTENCES!!!! Where in an atom are the following subatomic particles located: proton, neutron, electron? What is the charge on the following subatomic particles: proton, neutron, electron?

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Subatomic Particles

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Chapter 5 Sections 2 and 3

Chapter 5 Sections 2 and 3. Structure of an atom nucleus - center of an atom -discovered by Ernest Rutherford in 1911 proton (p + ) -positively charged subatomic particle -found in the nucleus of an atom -discovered by Eugen Goldstein in 1886 -mass= 1.67 X 10 -24 g.

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Discovery of the Nucleus Protons and Neutrons

Discovery of the Nucleus Protons and Neutrons. Who were they?. Ernest Rutherford is a physicist who won the N obel Prize for chemistry. He discovered the concept of radioactive half-life and theorized that atoms have their charge concentrated in a very small nucleus.

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Particles in the Atom

Particles in the Atom. Electrons (-) charge no mass located outside the nucleus Protons (+) charge 1 amu located inside the nucleus Neutrons no charge 1 amu located inside the nucleus. +. Discovery of the Neutron. +.

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